git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 239   --enable-libopencv       enable video filtering via libopencv [no]
 240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 242   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 243   --enable-libopus         enable Opus de/encoding via libopus [no]
 244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 245   --enable-librsvg         enable SVG rasterization via librsvg [no]
 246   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 247   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 251   --enable-libsoxr         enable Include libsoxr resampling [no]
 252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 253   --enable-libssh          enable SFTP protocol via libssh [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 261                            native implementation exists [no]
 262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 264   --enable-libwebp         enable WebP encoding via libwebp [no]
 265   --enable-libx264         enable H.264 encoding via x264 [no]
 266   --enable-libx265         enable HEVC encoding via x265 [no]
 267   --enable-libxavs         enable AVS encoding via xavs [no]
 268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 272   --enable-libxvid         enable Xvid encoding via xvidcore,
 273                            native MPEG-4/Xvid encoder exists [no]
 274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 275   --enable-libzmq          enable message passing via libzmq [no]
 276   --enable-libzvbi         enable teletext support via libzvbi [no]
 277   --disable-lzma           disable lzma [autodetect]
 278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 279   --enable-mediacodec      enable Android MediaCodec support [no]
 280   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 281   --enable-openal          enable OpenAL 1.1 capture support [no]
 282   --enable-opencl          enable OpenCL code
 283   --enable-opengl          enable OpenGL rendering [no]
 284   --enable-openssl         enable openssl, needed for https support
 285                            if gnutls is not used [no]
 286   --disable-schannel       disable SChannel SSP, needed for TLS support on
 287                            Windows if openssl and gnutls are not used [autodetect]
 288   --disable-sdl2           disable sdl2 [autodetect]
 289   --disable-securetransport disable Secure Transport, needed for TLS support
 290                            on OSX if openssl and gnutls are not used [autodetect]
 291   --disable-xlib           disable xlib [autodetect]
 292   --disable-zlib           disable zlib [autodetect]
 293
 294   The following libraries provide various hardware acceleration features:
 295   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 296   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 297   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 298   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 299   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 300   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 301   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 302   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 303   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 304   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 305   --enable-omx             enable OpenMAX IL code [no]
 306   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 307   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 308   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 309   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 310   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 311
 312 Toolchain options:
 313   --arch=ARCH              select architecture [$arch]
 314   --cpu=CPU                select the minimum required CPU (affects
 315                            instruction selection, may crash on older CPUs)
 316   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 317   --progs-suffix=SUFFIX    program name suffix []
 318   --enable-cross-compile   assume a cross-compiler is used
 319   --sysroot=PATH           root of cross-build tree
 320   --sysinclude=PATH        location of cross-build system headers
 321   --target-os=OS           compiler targets OS [$target_os]
 322   --target-exec=CMD        command to run executables on target
 323   --target-path=DIR        path to view of build directory on target
 324   --target-samples=DIR     path to samples directory on target
 325   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 326   --toolchain=NAME         set tool defaults according to NAME
 327   --nm=NM                  use nm tool NM [$nm_default]
 328   --ar=AR                  use archive tool AR [$ar_default]
 329   --as=AS                  use assembler AS [$as_default]
 330   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 331   --strip=STRIP            use strip tool STRIP [$strip_default]
 332   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 333   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 334   --cc=CC                  use C compiler CC [$cc_default]
 335   --cxx=CXX                use C compiler CXX [$cxx_default]
 336   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 337   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 338   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 339   --ld=LD                  use linker LD [$ld_default]
 340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 344   --host-cc=HOSTCC         use host C compiler HOSTCC
 345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 347   --host-ld=HOSTLD         use host linker HOSTLD
 348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 349   --host-libs=HLIBS        use libs HLIBS when linking for host
 350   --host-os=OS             compiler host OS [$target_os]
 351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 358   --extra-version=STRING   version string suffix []
 359   --optflags=OPTFLAGS      override optimization-related compiler flags
 360   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-x86asm         disable use of standalone x86 assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441   --enable-osfuzz          Enable building fuzzer tool
 442   --libfuzzer=PATH         path to libfuzzer
 443   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 444                            in the name) of tests whose result is ignored
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) printf '%s ' $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 request(){
 604     for var in $*; do
 605         eval ${var}_requested=yes
 606         eval $var=
 607     done
 608 }
 609
 610 enable(){
 611     set_all yes $*
 612 }
 613
 614 disable(){
 615     set_all no $*
 616 }
 617
 618 enable_weak(){
 619     set_weak yes $*
 620 }
 621
 622 disable_weak(){
 623     set_weak no $*
 624 }
 625
 626 enable_safe(){
 627     for var; do
 628         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 629     done
 630 }
 631
 632 disable_safe(){
 633     for var; do
 634         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 635     done
 636 }
 637
 638 do_enable_deep(){
 639     for var; do
 640         enabled $var && continue
 641         eval sel="\$${var}_select"
 642         eval sgs="\$${var}_suggest"
 643         pushvar var sgs
 644         enable_deep $sel
 645         popvar sgs
 646         enable_deep_weak $sgs
 647         popvar var
 648     done
 649 }
 650
 651 enable_deep(){
 652     do_enable_deep $*
 653     enable $*
 654 }
 655
 656 enable_deep_weak(){
 657     for var; do
 658         disabled $var && continue
 659         pushvar var
 660         do_enable_deep $var
 661         popvar var
 662         enable_weak $var
 663     done
 664 }
 665
 666 requested(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}_requested" $op "xyes"
 669 }
 670
 671 enabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xyes"
 674 }
 675
 676 disabled(){
 677     test "${1#!}" = "$1" && op='=' || op=!=
 678     eval test "x\$${1#!}" $op "xno"
 679 }
 680
 681 enabled_all(){
 682     for opt; do
 683         enabled $opt || return 1
 684     done
 685 }
 686
 687 disabled_all(){
 688     for opt; do
 689         disabled $opt || return 1
 690     done
 691 }
 692
 693 enabled_any(){
 694     for opt; do
 695         enabled $opt && return 0
 696     done
 697 }
 698
 699 disabled_any(){
 700     for opt; do
 701         disabled $opt && return 0
 702     done
 703     return 1
 704 }
 705
 706 set_default(){
 707     for opt; do
 708         eval : \${$opt:=\$${opt}_default}
 709     done
 710 }
 711
 712 is_in(){
 713     value=$1
 714     shift
 715     for var in $*; do
 716         [ $var = $value ] && return 0
 717     done
 718     return 1
 719 }
 720
 721 do_check_deps(){
 722     for cfg; do
 723         cfg="${cfg#!}"
 724         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 725         disabled ${cfg}_checking && continue
 726         enable ${cfg}_checking
 727         append allopts $cfg
 728
 729         eval dep_all="\$${cfg}_deps"
 730         eval dep_any="\$${cfg}_deps_any"
 731         eval dep_sel="\$${cfg}_select"
 732         eval dep_sgs="\$${cfg}_suggest"
 733         eval dep_ifa="\$${cfg}_if"
 734         eval dep_ifn="\$${cfg}_if_any"
 735
 736         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 737         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 738         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 739
 740         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 741         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 742         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 743         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 744         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 745
 746         if enabled $cfg; then
 747             enable_deep $dep_sel
 748             enable_deep_weak $dep_sgs
 749         fi
 750
 751         disable ${cfg}_checking
 752     done
 753 }
 754
 755 check_deps(){
 756     unset allopts
 757
 758     do_check_deps "$@"
 759
 760     for cfg in $allopts; do
 761         enabled $cfg || continue
 762         eval dep_extralibs="\$${cfg}_extralibs"
 763         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 764     done
 765 }
 766
 767 print_config(){
 768     pfx=$1
 769     files=$2
 770     shift 2
 771     map 'eval echo "$v \${$v:-no}"' "$@" |
 772     awk "BEGIN { split(\"$files\", files) }
 773         {
 774             c = \"$pfx\" toupper(\$1);
 775             v = \$2;
 776             sub(/yes/, 1, v);
 777             sub(/no/,  0, v);
 778             for (f in files) {
 779                 file = files[f];
 780                 if (file ~ /\\.h\$/) {
 781                     printf(\"#define %s %d\\n\", c, v) >>file;
 782                 } else if (file ~ /\\.asm\$/) {
 783                     printf(\"%%define %s %d\\n\", c, v) >>file;
 784                 } else if (file ~ /\\.mak\$/) {
 785                     n = -v ? \"\" : \"!\";
 786                     printf(\"%s%s=yes\\n\", n, c) >>file;
 787                 } else if (file ~ /\\.texi\$/) {
 788                     pre = -v ? \"\" : \"@c \";
 789                     yesno = \$2;
 790                     c2 = tolower(c);
 791                     gsub(/_/, \"-\", c2);
 792                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 793                 }
 794             }
 795         }"
 796 }
 797
 798 print_enabled(){
 799     suf=$1
 800     shift
 801     for v; do
 802         enabled $v && printf "%s\n" ${v%$suf}
 803     done
 804 }
 805
 806 append(){
 807     var=$1
 808     shift
 809     eval "$var=\"\$$var $*\""
 810 }
 811
 812 prepend(){
 813     var=$1
 814     shift
 815     eval "$var=\"$* \$$var\""
 816 }
 817
 818 unique(){
 819     var=$1
 820     uniq_list=""
 821     for tok in $(eval echo \$$var); do
 822         uniq_list="$(filter_out $tok $uniq_list) $tok"
 823     done
 824     eval "$var=\"${uniq_list}\""
 825 }
 826
 827 add_cppflags(){
 828     append CPPFLAGS "$@"
 829 }
 830
 831 add_cflags(){
 832     append CFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_cflags_headers(){
 836     append CFLAGS_HEADERS $($cflags_filter "$@")
 837 }
 838
 839 add_cxxflags(){
 840     append CXXFLAGS $($cflags_filter "$@")
 841 }
 842
 843 add_asflags(){
 844     append ASFLAGS $($asflags_filter "$@")
 845 }
 846
 847 add_objcflags(){
 848     append OBJCFLAGS $($objcflags_filter "$@")
 849 }
 850
 851 add_ldflags(){
 852     append LDFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldexeflags(){
 856     append LDEXEFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_ldlibflags(){
 860     append LDLIBFLAGS $($ldflags_filter "$@")
 861 }
 862
 863 add_stripflags(){
 864     append ASMSTRIPFLAGS "$@"
 865 }
 866
 867 add_extralibs(){
 868     prepend extralibs $($ldflags_filter "$@")
 869 }
 870
 871 add_host_cppflags(){
 872     append host_cppflags "$@"
 873 }
 874
 875 add_host_cflags(){
 876     append host_cflags $($host_cflags_filter "$@")
 877 }
 878
 879 add_host_ldflags(){
 880     append host_ldflags $($host_ldflags_filter "$@")
 881 }
 882
 883 add_compat(){
 884     append compat_objs $1
 885     shift
 886     map 'add_cppflags -D$v' "$@"
 887 }
 888
 889 check_cmd(){
 890     log "$@"
 891     "$@" >> $logfile 2>&1
 892 }
 893
 894 check_stat(){
 895     log check_stat "$@"
 896     stat "$1" >> $logfile 2>&1
 897 }
 898
 899 cc_o(){
 900     eval printf '%s\\n' $CC_O
 901 }
 902
 903 cc_e(){
 904     eval printf '%s\\n' $CC_E
 905 }
 906
 907 check_cc(){
 908     log check_cc "$@"
 909     cat > $TMPC
 910     log_file $TMPC
 911     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 912 }
 913
 914 check_cxx(){
 915     log check_cxx "$@"
 916     cat > $TMPCPP
 917     log_file $TMPCPP
 918     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 919 }
 920
 921 check_objcc(){
 922     log check_objcc "$@"
 923     cat > $TMPM
 924     log_file $TMPM
 925     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 926 }
 927
 928 check_cpp(){
 929     log check_cpp "$@"
 930     cat > $TMPC
 931     log_file $TMPC
 932     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 933 }
 934
 935 as_o(){
 936     eval printf '%s\\n' $AS_O
 937 }
 938
 939 check_as(){
 940     log check_as "$@"
 941     cat > $TMPS
 942     log_file $TMPS
 943     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 944 }
 945
 946 check_inline_asm(){
 947     log check_inline_asm "$@"
 948     name="$1"
 949     code="$2"
 950     shift 2
 951     disable $name
 952     check_cc "$@" <<EOF && enable $name
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955 }
 956
 957 check_inline_asm_flags(){
 958     log check_inline_asm_flags "$@"
 959     name="$1"
 960     code="$2"
 961     flags=''
 962     shift 2
 963     while [ "$1" != "" ]; do
 964       append flags $1
 965       shift
 966     done;
 967     disable $name
 968     cat > $TMPC <<EOF
 969 void foo(void){ __asm__ volatile($code); }
 970 EOF
 971     log_file $TMPC
 972     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 973     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 974 }
 975
 976 check_insn(){
 977     log check_insn "$@"
 978     check_inline_asm ${1}_inline "\"$2\""
 979     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 980 }
 981
 982 check_x86asm(){
 983     log check_x86asm "$@"
 984     echo "$1" > $TMPS
 985     log_file $TMPS
 986     shift 1
 987     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
 988 }
 989
 990 ld_o(){
 991     eval printf '%s\\n' $LD_O
 992 }
 993
 994 check_ld(){
 995     log check_ld "$@"
 996     type=$1
 997     shift 1
 998     flags=$(filter_out '-l*|*.so' $@)
 999     libs=$(filter '-l*|*.so' $@)
1000     check_$type $($cflags_filter $flags) || return
1001     flags=$($ldflags_filter $flags)
1002     libs=$($ldflags_filter $libs)
1003     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1004 }
1005
1006 print_include(){
1007     hdr=$1
1008     test "${hdr%.h}" = "${hdr}" &&
1009         echo "#include $hdr"    ||
1010         echo "#include <$hdr>"
1011 }
1012
1013 check_code(){
1014     log check_code "$@"
1015     check=$1
1016     headers=$2
1017     code=$3
1018     shift 3
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         echo "int main(void) { $code; return 0; }"
1024     } | check_$check "$@"
1025 }
1026
1027 check_cppflags(){
1028     log check_cppflags "$@"
1029     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1030 int x;
1031 EOF
1032 }
1033
1034 test_cflags(){
1035     log test_cflags "$@"
1036     set -- $($cflags_filter "$@")
1037     check_cc "$@" <<EOF
1038 int x;
1039 EOF
1040 }
1041
1042 check_cflags(){
1043     log check_cflags "$@"
1044     test_cflags "$@" && add_cflags "$@"
1045 }
1046
1047 check_cxxflags(){
1048     log check_cxxflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 test_objcflags(){
1056     log test_objcflags "$@"
1057     set -- $($objcflags_filter "$@")
1058     check_objcc "$@" <<EOF
1059 int x;
1060 EOF
1061 }
1062
1063 check_objcflags(){
1064     log check_objcflags "$@"
1065     test_objcflags "$@" && add_objcflags "$@"
1066 }
1067
1068 test_ldflags(){
1069     log test_ldflags "$@"
1070     check_ld "cc" "$@" <<EOF
1071 int main(void){ return 0; }
1072 EOF
1073 }
1074
1075 check_ldflags(){
1076     log check_ldflags "$@"
1077     test_ldflags "$@" && add_ldflags "$@"
1078 }
1079
1080 test_stripflags(){
1081     log test_stripflags "$@"
1082     # call check_cc to get a fresh TMPO
1083     check_cc <<EOF
1084 int main(void) { return 0; }
1085 EOF
1086     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1087 }
1088
1089 check_stripflags(){
1090     log check_stripflags "$@"
1091     test_stripflags "$@" && add_stripflags "$@"
1092 }
1093
1094 check_header(){
1095     log check_header "$@"
1096     header=$1
1097     shift
1098     disable_safe $header
1099     check_cpp "$@" <<EOF && enable_safe $header
1100 #include <$header>
1101 int x;
1102 EOF
1103 }
1104
1105 check_header_objcc(){
1106     log check_header_objcc "$@"
1107     rm -f -- "$TMPO"
1108     header=$1
1109     shift
1110     disable_safe $header
1111     {
1112        echo "#include <$header>"
1113        echo "int main(void) { return 0; }"
1114     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1115 }
1116
1117 check_func(){
1118     log check_func "$@"
1119     func=$1
1120     shift
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 extern int $func();
1124 int main(void){ $func(); }
1125 EOF
1126 }
1127
1128 check_complexfunc(){
1129     log check_complexfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f * I"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <complex.h>
1137 #include <math.h>
1138 float foo(complex float f, complex float g) { return $func($args); }
1139 int main(void){ return (int) foo; }
1140 EOF
1141 }
1142
1143 check_mathfunc(){
1144     log check_mathfunc "$@"
1145     func=$1
1146     narg=$2
1147     shift 2
1148     test $narg = 2 && args="f, g" || args="f"
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 #include <math.h>
1152 float foo(float f, float g) { return $func($args); }
1153 int main(void){ return (int) foo; }
1154 EOF
1155 }
1156
1157 check_func_headers(){
1158     log check_func_headers "$@"
1159     headers=$1
1160     funcs=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             print_include $hdr
1165         done
1166         echo "#include <stdint.h>"
1167         for func in $funcs; do
1168             echo "long check_$func(void) { return (long) $func; }"
1169         done
1170         echo "int main(void) { int ret = 0;"
1171         # LTO could optimize out the test functions without this
1172         for func in $funcs; do
1173             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1174         done
1175         echo "return ret; }"
1176     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_class_headers_cpp(){
1180     log check_class_headers_cpp "$@"
1181     headers=$1
1182     classes=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             echo "#include <$hdr>"
1187         done
1188         echo "int main(void) { "
1189         i=1
1190         for class in $classes; do
1191             echo "$class obj$i;"
1192             i=$(expr $i + 1)
1193         done
1194         echo "return 0; }"
1195     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1196 }
1197
1198 check_cpp_condition(){
1199     log check_cpp_condition "$@"
1200     header=$1
1201     condition=$2
1202     shift 2
1203     check_cpp "$@" <<EOF
1204 #include <$header>
1205 #if !($condition)
1206 #error "unsatisfied condition: $condition"
1207 #endif
1208 EOF
1209 }
1210
1211 test_cflags_cc(){
1212     log test_cflags_cc "$@"
1213     flags=$1
1214     header=$2
1215     condition=$3
1216     shift 3
1217     set -- $($cflags_filter "$flags")
1218     check_cc "$@" <<EOF
1219 #include <$header>
1220 #if !($condition)
1221 #error "unsatisfied condition: $condition"
1222 #endif
1223 EOF
1224 }
1225
1226 check_lib(){
1227     log check_lib "$@"
1228     name="$1"
1229     headers="$2"
1230     funcs="$3"
1231     shift 3
1232     disable $name
1233     check_func_headers "$headers" "$funcs" "$@" &&
1234         enable $name && add_extralibs "$@"
1235 }
1236
1237 check_lib_cpp(){
1238     log check_lib_cpp "$@"
1239     headers="$1"
1240     classes="$2"
1241     shift 2
1242     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1243 }
1244
1245 check_pkg_config(){
1246     log check_pkg_config "$@"
1247     pkg_version="$1"
1248     pkg="${1%% *}"
1249     headers="$2"
1250     funcs="$3"
1251     shift 3
1252     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1253     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1254     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1255     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1256         set_safe "${pkg}_cflags"    $pkg_cflags &&
1257         set_safe "${pkg}_extralibs" $pkg_libs
1258 }
1259
1260 check_exec(){
1261     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1262 }
1263
1264 check_exec_crash(){
1265     log check_exec_crash "$@"
1266     code=$(cat)
1267
1268     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1269     # are safe but may not be available everywhere.  Thus we use
1270     # raise(SIGTERM) instead.  The check is run in a subshell so we
1271     # can redirect the "Terminated" message from the shell.  SIGBUS
1272     # is not defined by standard C so it is used conditionally.
1273
1274     (check_exec "$@") >> $logfile 2>&1 <<EOF
1275 #include <signal.h>
1276 static void sighandler(int sig){
1277     raise(SIGTERM);
1278 }
1279 int foo(void){
1280     $code
1281 }
1282 int (*func_ptr)(void) = foo;
1283 int main(void){
1284     signal(SIGILL, sighandler);
1285     signal(SIGFPE, sighandler);
1286     signal(SIGSEGV, sighandler);
1287 #ifdef SIGBUS
1288     signal(SIGBUS, sighandler);
1289 #endif
1290     return func_ptr();
1291 }
1292 EOF
1293 }
1294
1295 check_type(){
1296     log check_type "$@"
1297     headers=$1
1298     type=$2
1299     shift 2
1300     disable_safe "$type"
1301     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1302 }
1303
1304 check_struct(){
1305     log check_struct "$@"
1306     headers=$1
1307     struct=$2
1308     member=$3
1309     shift 3
1310     disable_safe "${struct}_${member}"
1311     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1312         enable_safe "${struct}_${member}"
1313 }
1314
1315 check_builtin(){
1316     log check_builtin "$@"
1317     name=$1
1318     headers=$2
1319     builtin=$3
1320     shift 3
1321     disable "$name"
1322     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1323 }
1324
1325 check_compile_assert(){
1326     log check_compile_assert "$@"
1327     name=$1
1328     headers=$2
1329     condition=$3
1330     shift 3
1331     disable "$name"
1332     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1333 }
1334
1335 require(){
1336     log require "$@"
1337     name_version="$1"
1338     name="${1%% *}"
1339     headers="$2"
1340     func="$3"
1341     shift 3
1342     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1343 }
1344
1345 require_cpp(){
1346     name="$1"
1347     headers="$2"
1348     classes="$3"
1349     shift 3
1350     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1351 }
1352
1353 use_pkg_config(){
1354     log use_pkg_config "$@"
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_extralibs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 hostcc_e(){
1366     eval printf '%s\\n' $HOSTCC_E
1367 }
1368
1369 hostcc_o(){
1370     eval printf '%s\\n' $HOSTCC_O
1371 }
1372
1373 check_host_cc(){
1374     log check_host_cc "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1378 }
1379
1380 check_host_cpp(){
1381     log check_host_cpp "$@"
1382     cat > $TMPC
1383     log_file $TMPC
1384     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1385 }
1386
1387 check_host_cppflags(){
1388     log check_host_cppflags "$@"
1389     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cflags(){
1395     log check_host_cflags "$@"
1396     set -- $($host_cflags_filter "$@")
1397     check_host_cc "$@" <<EOF && append host_cflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cpp_condition(){
1403     log check_host_cpp_condition "$@"
1404     header=$1
1405     condition=$2
1406     shift 2
1407     check_host_cpp "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 cp_if_changed(){
1416     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1417     mkdir -p "$(dirname $2)"
1418     cp -f "$1" "$2"
1419 }
1420
1421 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1422 # system-dependent things.
1423
1424 AVCODEC_COMPONENTS="
1425     bsfs
1426     decoders
1427     encoders
1428     hwaccels
1429     parsers
1430 "
1431
1432 AVDEVICE_COMPONENTS="
1433     indevs
1434     outdevs
1435 "
1436 AVFILTER_COMPONENTS="
1437     filters
1438 "
1439 AVFORMAT_COMPONENTS="
1440     demuxers
1441     muxers
1442     protocols
1443 "
1444
1445 AVRESAMPLE_COMPONENTS=""
1446 AVUTIL_COMPONENTS=""
1447
1448 COMPONENT_LIST="
1449     $AVCODEC_COMPONENTS
1450     $AVDEVICE_COMPONENTS
1451     $AVFILTER_COMPONENTS
1452     $AVFORMAT_COMPONENTS
1453     $AVRESAMPLE_COMPONENTS
1454     $AVUTIL_COMPONENTS
1455 "
1456
1457 EXAMPLE_LIST="
1458     avio_dir_cmd_example
1459     avio_reading_example
1460     decode_audio_example
1461     decode_video_example
1462     demuxing_decoding_example
1463     encode_audio_example
1464     encode_video_example
1465     extract_mvs_example
1466     filter_audio_example
1467     filtering_audio_example
1468     filtering_video_example
1469     http_multiclient_example
1470     metadata_example
1471     muxing_example
1472     qsvdec_example
1473     remuxing_example
1474     resampling_audio_example
1475     scaling_video_example
1476     transcode_aac_example
1477     transcoding_example
1478 "
1479 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1480     bzlib
1481     iconv
1482     libxcb
1483     libxcb_shm
1484     libxcb_shape
1485     libxcb_xfixes
1486     lzma
1487     schannel
1488     sdl
1489     sdl2
1490     securetransport
1491     xlib
1492     zlib
1493 "
1494
1495 EXTERNAL_LIBRARY_GPL_LIST="
1496     avisynth
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     decklink
1509     libfdk_aac
1510     openssl
1511 "
1512
1513 EXTERNAL_LIBRARY_VERSION3_LIST="
1514     gmp
1515     libopencore_amrnb
1516     libopencore_amrwb
1517     libvo_amrwbenc
1518 "
1519
1520 EXTERNAL_LIBRARY_GPLV3_LIST="
1521     libsmbclient
1522 "
1523
1524 EXTERNAL_LIBRARY_LIST="
1525     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1526     $EXTERNAL_LIBRARY_GPL_LIST
1527     $EXTERNAL_LIBRARY_NONFREE_LIST
1528     $EXTERNAL_LIBRARY_VERSION3_LIST
1529     $EXTERNAL_LIBRARY_GPLV3_LIST
1530     chromaprint
1531     crystalhd
1532     gcrypt
1533     gnutls
1534     jni
1535     ladspa
1536     libass
1537     libbluray
1538     libbs2b
1539     libcaca
1540     libcelt
1541     libdc1394
1542     libflite
1543     libfontconfig
1544     libfreetype
1545     libfribidi
1546     libgme
1547     libgsm
1548     libiec61883
1549     libilbc
1550     libkvazaar
1551     libmodplug
1552     libmp3lame
1553     libmysofa
1554     libopencv
1555     libopenh264
1556     libopenjpeg
1557     libopenmpt
1558     libopus
1559     libpulse
1560     librsvg
1561     librtmp
1562     libshine
1563     libsmbclient
1564     libsnappy
1565     libsoxr
1566     libspeex
1567     libssh
1568     libtesseract
1569     libtheora
1570     libtwolame
1571     libv4l2
1572     libvorbis
1573     libvpx
1574     libwavpack
1575     libwebp
1576     libzimg
1577     libzmq
1578     libzvbi
1579     mediacodec
1580     openal
1581     opencl
1582     opengl
1583     videotoolbox
1584 "
1585 HWACCEL_AUTODETECT_LIBRARY_LIST="
1586     audiotoolbox
1587     cuda
1588     cuvid
1589     d3d11va
1590     dxva2
1591     nvenc
1592     vaapi
1593     vda
1594     vdpau
1595     videotoolbox_hwaccel
1596     xvmc
1597 "
1598
1599 HWACCEL_LIBRARY_NONFREE_LIST="
1600     cuda_sdk
1601     libnpp
1602 "
1603
1604 HWACCEL_LIBRARY_LIST="
1605     $HWACCEL_AUTODETECT_LIBRARY_LIST
1606     $HWACCEL_LIBRARY_NONFREE_LIST
1607     libmfx
1608     mmal
1609     omx
1610 "
1611
1612 DOCUMENT_LIST="
1613     doc
1614     htmlpages
1615     manpages
1616     podpages
1617     txtpages
1618 "
1619
1620 FEATURE_LIST="
1621     ftrapv
1622     gray
1623     hardcoded_tables
1624     omx_rpi
1625     runtime_cpudetect
1626     safe_bitstream_reader
1627     shared
1628     small
1629     static
1630     swscale_alpha
1631 "
1632
1633 LIBRARY_LIST="
1634     avcodec
1635     avdevice
1636     avfilter
1637     avformat
1638     avresample
1639     avutil
1640     postproc
1641     swresample
1642     swscale
1643 "
1644
1645 LICENSE_LIST="
1646     gpl
1647     nonfree
1648     version3
1649 "
1650
1651 PROGRAM_LIST="
1652     ffplay
1653     ffprobe
1654     ffserver
1655     ffmpeg
1656 "
1657
1658 SUBSYSTEM_LIST="
1659     dct
1660     dwt
1661     error_resilience
1662     faan
1663     fast_unaligned
1664     fft
1665     lsp
1666     lzo
1667     mdct
1668     pixelutils
1669     network
1670     rdft
1671 "
1672
1673 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1674 CONFIG_LIST="
1675     $DOCUMENT_LIST
1676     $EXAMPLE_LIST
1677     $EXTERNAL_LIBRARY_LIST
1678     $HWACCEL_LIBRARY_LIST
1679     $FEATURE_LIST
1680     $LICENSE_LIST
1681     $LIBRARY_LIST
1682     $PROGRAM_LIST
1683     $SUBSYSTEM_LIST
1684     fontconfig
1685     memory_poisoning
1686     neon_clobber_test
1687     ossfuzz
1688     pic
1689     thumb
1690     valgrind_backtrace
1691     xmm_clobber_test
1692     $COMPONENT_LIST
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820     simd_align_32
1821 "
1822
1823 BUILTIN_LIST="
1824     atomic_cas_ptr
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     x86asm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     d3d11_h
1853     dispatch_dispatch_h
1854     dev_bktr_ioctl_bt848_h
1855     dev_bktr_ioctl_meteor_h
1856     dev_ic_bt8xx_h
1857     dev_video_bktr_ioctl_bt848_h
1858     dev_video_meteor_ioctl_meteor_h
1859     direct_h
1860     dirent_h
1861     dlfcn_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_2_openjpeg_h
1872     openjpeg_2_1_openjpeg_h
1873     openjpeg_2_0_openjpeg_h
1874     openjpeg_1_5_openjpeg_h
1875     OpenGL_gl3_h
1876     poll_h
1877     sndio_h
1878     soundcard_h
1879     stdatomic_h
1880     sys_mman_h
1881     sys_param_h
1882     sys_resource_h
1883     sys_select_h
1884     sys_soundcard_h
1885     sys_time_h
1886     sys_un_h
1887     sys_videoio_h
1888     termios_h
1889     udplite_h
1890     unistd_h
1891     valgrind_valgrind_h
1892     windows_h
1893     winsock2_h
1894 "
1895
1896 INTRINSICS_LIST="
1897     intrinsics_neon
1898 "
1899
1900 COMPLEX_FUNCS="
1901     cabs
1902     cexp
1903 "
1904
1905 MATH_FUNCS="
1906     atanf
1907     atan2f
1908     cbrt
1909     cbrtf
1910     copysign
1911     cosf
1912     erf
1913     exp2
1914     exp2f
1915     expf
1916     hypot
1917     isfinite
1918     isinf
1919     isnan
1920     ldexpf
1921     llrint
1922     llrintf
1923     log2
1924     log2f
1925     log10f
1926     lrint
1927     lrintf
1928     powf
1929     rint
1930     round
1931     roundf
1932     sinf
1933     trunc
1934     truncf
1935 "
1936
1937 SYSTEM_FUNCS="
1938     access
1939     aligned_malloc
1940     arc4random
1941     clock_gettime
1942     closesocket
1943     CommandLineToArgvW
1944     CoTaskMemFree
1945     CryptGenRandom
1946     dlopen
1947     fcntl
1948     flt_lim
1949     fork
1950     getaddrinfo
1951     gethrtime
1952     getopt
1953     GetProcessAffinityMask
1954     GetProcessMemoryInfo
1955     GetProcessTimes
1956     getrusage
1957     GetSystemTimeAsFileTime
1958     gettimeofday
1959     glob
1960     glXGetProcAddress
1961     gmtime_r
1962     inet_aton
1963     isatty
1964     jack_port_get_latency_range
1965     kbhit
1966     LoadLibrary
1967     localtime_r
1968     lstat
1969     lzo1x_999_compress
1970     mach_absolute_time
1971     MapViewOfFile
1972     memalign
1973     mkstemp
1974     mmap
1975     mprotect
1976     nanosleep
1977     PeekNamedPipe
1978     posix_memalign
1979     pthread_cancel
1980     sched_getaffinity
1981     SetConsoleTextAttribute
1982     SetConsoleCtrlHandler
1983     setmode
1984     setrlimit
1985     Sleep
1986     strerror_r
1987     sysconf
1988     sysctl
1989     usleep
1990     UTGetOSTypeFromString
1991     VirtualAlloc
1992     wglGetProcAddress
1993 "
1994
1995 TOOLCHAIN_FEATURES="
1996     as_dn_directive
1997     as_fpu_directive
1998     as_func
1999     as_object_arch
2000     asm_mod_q
2001     attribute_may_alias
2002     attribute_packed
2003     blocks_extension
2004     ebp_available
2005     ebx_available
2006     gnu_as
2007     gnu_windres
2008     ibm_asm
2009     inline_asm_direct_symbol_refs
2010     inline_asm_labels
2011     inline_asm_nonlocal_labels
2012     pragma_deprecated
2013     rsync_contimeout
2014     symver_asm_label
2015     symver_gnu_asm
2016     vfp_args
2017     xform_asm
2018     xmm_clobbers
2019 "
2020
2021 TYPES_LIST="
2022     CONDITION_VARIABLE_Ptr
2023     socklen_t
2024     struct_addrinfo
2025     struct_group_source_req
2026     struct_ip_mreq_source
2027     struct_ipv6_mreq
2028     struct_msghdr_msg_flags
2029     struct_pollfd
2030     struct_rusage_ru_maxrss
2031     struct_sctp_event_subscribe
2032     struct_sockaddr_in6
2033     struct_sockaddr_sa_len
2034     struct_sockaddr_storage
2035     struct_stat_st_mtim_tv_nsec
2036     struct_v4l2_frmivalenum_discrete
2037 "
2038
2039 HAVE_LIST="
2040     $ARCH_EXT_LIST
2041     $(add_suffix _external $ARCH_EXT_LIST)
2042     $(add_suffix _inline   $ARCH_EXT_LIST)
2043     $ARCH_FEATURES
2044     $ATOMICS_LIST
2045     $BUILTIN_LIST
2046     $COMPLEX_FUNCS
2047     $HAVE_LIST_CMDLINE
2048     $HAVE_LIST_PUB
2049     $HEADERS_LIST
2050     $INTRINSICS_LIST
2051     $MATH_FUNCS
2052     $SYSTEM_FUNCS
2053     $THREADS_LIST
2054     $TOOLCHAIN_FEATURES
2055     $TYPES_LIST
2056     alsa
2057     atomics_native
2058     dos_paths
2059     jack
2060     libc_msvcrt
2061     makeinfo
2062     makeinfo_html
2063     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2064     perl
2065     pod2man
2066     sdl2
2067     section_data_rel_ro
2068     sndio
2069     texi2html
2070     threads
2071     vaapi_drm
2072     vaapi_x11
2073     vdpau_x11
2074     winrt
2075 "
2076
2077 # options emitted with CONFIG_ prefix but not available on the command line
2078 CONFIG_EXTRA="
2079     aandcttables
2080     ac3dsp
2081     audio_frame_queue
2082     audiodsp
2083     blockdsp
2084     bswapdsp
2085     cabac
2086     dirac_parse
2087     dvprofile
2088     exif
2089     faandct
2090     faanidct
2091     fdctdsp
2092     flacdsp
2093     fmtconvert
2094     frame_thread_encoder
2095     g722dsp
2096     golomb
2097     gplv3
2098     h263dsp
2099     h264chroma
2100     h264dsp
2101     h264parse
2102     h264pred
2103     h264qpel
2104     hevcparse
2105     hpeldsp
2106     huffman
2107     huffyuvdsp
2108     huffyuvencdsp
2109     idctdsp
2110     iirfilter
2111     mdct15
2112     intrax8
2113     iso_media
2114     ividsp
2115     jpegtables
2116     lgplv3
2117     libx262
2118     llauddsp
2119     llviddsp
2120     llvidencdsp
2121     lpc
2122     lzf
2123     me_cmp
2124     mpeg_er
2125     mpegaudio
2126     mpegaudiodsp
2127     mpegaudioheader
2128     mpegvideo
2129     mpegvideoenc
2130     mss34dsp
2131     pixblockdsp
2132     qpeldsp
2133     qsv
2134     qsvdec
2135     qsvenc
2136     rangecoder
2137     riffdec
2138     riffenc
2139     rtpdec
2140     rtpenc_chain
2141     rv34dsp
2142     sinewin
2143     snappy
2144     srtp
2145     startcode
2146     texturedsp
2147     texturedspenc
2148     tpeldsp
2149     vaapi_encode
2150     vc1dsp
2151     videodsp
2152     vp3dsp
2153     vp56dsp
2154     vp8dsp
2155     vt_bt2020
2156     wma_freqs
2157     wmv2dsp
2158 "
2159
2160 CMDLINE_SELECT="
2161     $ARCH_EXT_LIST
2162     $CONFIG_LIST
2163     $HAVE_LIST_CMDLINE
2164     $THREADS_LIST
2165     asm
2166     cross_compile
2167     debug
2168     extra_warnings
2169     logging
2170     lto
2171     optimizations
2172     rpath
2173     stripping
2174 "
2175
2176 PATHS_LIST="
2177     bindir
2178     datadir
2179     docdir
2180     incdir
2181     libdir
2182     mandir
2183     pkgconfigdir
2184     prefix
2185     shlibdir
2186     install_name_dir
2187 "
2188
2189 CMDLINE_SET="
2190     $PATHS_LIST
2191     ar
2192     arch
2193     as
2194     assert_level
2195     build_suffix
2196     cc
2197     objcc
2198     cpu
2199     cross_prefix
2200     custom_allocator
2201     cxx
2202     dep_cc
2203     doxygen
2204     env
2205     extra_version
2206     gas
2207     host_cc
2208     host_cflags
2209     host_extralibs
2210     host_ld
2211     host_ldflags
2212     host_os
2213     ignore_tests
2214     install
2215     ld
2216     ln_s
2217     logfile
2218     malloc_prefix
2219     nm
2220     optflags
2221     nvccflags
2222     pkg_config
2223     pkg_config_flags
2224     progs_suffix
2225     random_seed
2226     ranlib
2227     samples
2228     strip
2229     sws_max_filter_size
2230     sysinclude
2231     sysroot
2232     target_exec
2233     target_os
2234     target_path
2235     target_samples
2236     tempprefix
2237     toolchain
2238     valgrind
2239     x86asmexe
2240 "
2241
2242 CMDLINE_APPEND="
2243     extra_cflags
2244     extra_cxxflags
2245     extra_objcflags
2246     host_cppflags
2247 "
2248
2249 # code dependency declarations
2250
2251 # architecture extensions
2252
2253 armv5te_deps="arm"
2254 armv6_deps="arm"
2255 armv6t2_deps="arm"
2256 armv8_deps="aarch64"
2257 neon_deps_any="aarch64 arm"
2258 intrinsics_neon_deps="neon"
2259 vfp_deps_any="aarch64 arm"
2260 vfpv3_deps="vfp"
2261 setend_deps="arm"
2262
2263 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2264
2265 loongson2_deps="mips"
2266 loongson3_deps="mips"
2267 mipsfpu_deps="mips"
2268 mipsdsp_deps="mips"
2269 mipsdspr2_deps="mips"
2270 mips32r2_deps="mips"
2271 mips32r5_deps="mips"
2272 mips32r6_deps="mips"
2273 mips64r2_deps="mips"
2274 mips64r6_deps="mips"
2275 msa_deps="mipsfpu"
2276 mmi_deps="mips"
2277
2278 altivec_deps="ppc"
2279 dcbzl_deps="ppc"
2280 ldbrx_deps="ppc"
2281 ppc4xx_deps="ppc"
2282 vsx_deps="altivec"
2283 power8_deps="vsx"
2284
2285 cpunop_deps="i686"
2286 x86_64_select="i686"
2287 x86_64_suggest="fast_cmov"
2288
2289 amd3dnow_deps="mmx"
2290 amd3dnowext_deps="amd3dnow"
2291 i686_deps="x86"
2292 mmx_deps="x86"
2293 mmxext_deps="mmx"
2294 sse_deps="mmxext"
2295 sse2_deps="sse"
2296 sse3_deps="sse2"
2297 ssse3_deps="sse3"
2298 sse4_deps="ssse3"
2299 sse42_deps="sse4"
2300 aesni_deps="sse42"
2301 avx_deps="sse42"
2302 xop_deps="avx"
2303 fma3_deps="avx"
2304 fma4_deps="avx"
2305 avx2_deps="avx"
2306
2307 mmx_external_deps="x86asm"
2308 mmx_inline_deps="inline_asm"
2309 mmx_suggest="mmx_external mmx_inline"
2310
2311 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2312     eval dep=\$${ext}_deps
2313     eval ${ext}_external_deps='"${dep}_external"'
2314     eval ${ext}_inline_deps='"${dep}_inline"'
2315     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2316 done
2317
2318 aligned_stack_if_any="aarch64 ppc x86"
2319 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2320 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2321 fast_unaligned_if_any="aarch64 ppc x86"
2322 simd_align_16_if_any="altivec neon sse"
2323 simd_align_32_if_any="avx"
2324
2325 # system capabilities
2326 symver_if_any="symver_asm_label symver_gnu_asm"
2327 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2328
2329 # threading support
2330 atomics_gcc_if="sync_val_compare_and_swap"
2331 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2332 atomics_win32_if="MemoryBarrier"
2333 atomics_native_if_any="$ATOMICS_LIST"
2334 w32threads_deps="atomics_native"
2335 threads_if_any="$THREADS_LIST"
2336
2337 # subsystems
2338 dct_select="rdft"
2339 dirac_parse_select="golomb"
2340 error_resilience_select="me_cmp"
2341 faandct_deps="faan fdctdsp"
2342 faanidct_deps="faan idctdsp"
2343 h264dsp_select="startcode"
2344 hevcparse_select="golomb"
2345 frame_thread_encoder_deps="encoders threads"
2346 intrax8_select="blockdsp idctdsp"
2347 mdct_select="fft"
2348 mdct15_select="fft"
2349 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2350 mpeg_er_select="error_resilience"
2351 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2352 mpegaudiodsp_select="dct"
2353 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2354 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2355 vc1dsp_select="h264chroma qpeldsp startcode"
2356 rdft_select="fft"
2357
2358 # decoders / encoders
2359 aac_decoder_select="mdct15 mdct sinewin"
2360 aac_fixed_decoder_select="mdct sinewin"
2361 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2362 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2363 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2364 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2365 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2366 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 adpcm_g722_decoder_select="g722dsp"
2368 adpcm_g722_encoder_select="g722dsp"
2369 aic_decoder_select="golomb idctdsp"
2370 alac_encoder_select="lpc"
2371 als_decoder_select="bswapdsp"
2372 amrnb_decoder_select="lsp"
2373 amrwb_decoder_select="lsp"
2374 amv_decoder_select="sp5x_decoder exif"
2375 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2376 ape_decoder_select="bswapdsp llauddsp"
2377 apng_decoder_select="zlib"
2378 apng_encoder_select="llvidencdsp zlib"
2379 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2380 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2381 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 atrac1_decoder_select="mdct sinewin"
2384 atrac3_decoder_select="mdct"
2385 atrac3p_decoder_select="mdct sinewin"
2386 avrn_decoder_select="exif jpegtables"
2387 bink_decoder_select="blockdsp hpeldsp"
2388 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2389 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2390 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2391 clearvideo_decoder_select="idctdsp"
2392 cllc_decoder_select="bswapdsp"
2393 comfortnoise_encoder_select="lpc"
2394 cook_decoder_select="audiodsp mdct sinewin"
2395 cscd_decoder_select="lzo"
2396 cscd_decoder_suggest="zlib"
2397 dca_decoder_select="mdct"
2398 dds_decoder_select="texturedsp"
2399 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2400 dnxhd_decoder_select="blockdsp idctdsp"
2401 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2402 dvvideo_decoder_select="dvprofile idctdsp"
2403 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2404 dxa_decoder_select="zlib"
2405 dxv_decoder_select="lzf texturedsp"
2406 eac3_decoder_select="ac3_decoder"
2407 eac3_encoder_select="ac3_encoder"
2408 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2409 eatgq_decoder_select="aandcttables"
2410 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2411 exr_decoder_select="zlib"
2412 ffv1_decoder_select="rangecoder"
2413 ffv1_encoder_select="rangecoder"
2414 ffvhuff_decoder_select="huffyuv_decoder"
2415 ffvhuff_encoder_select="huffyuv_encoder"
2416 fic_decoder_select="golomb"
2417 flac_decoder_select="flacdsp"
2418 flac_encoder_select="bswapdsp flacdsp lpc"
2419 flashsv2_decoder_select="zlib"
2420 flashsv2_encoder_select="zlib"
2421 flashsv_decoder_select="zlib"
2422 flashsv_encoder_select="zlib"
2423 flv_decoder_select="h263_decoder"
2424 flv_encoder_select="h263_encoder"
2425 fourxm_decoder_select="blockdsp bswapdsp"
2426 fraps_decoder_select="bswapdsp huffman"
2427 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2428 g729_decoder_select="audiodsp"
2429 h261_decoder_select="mpegvideo"
2430 h261_encoder_select="aandcttables mpegvideoenc"
2431 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2432 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2433 h263i_decoder_select="h263_decoder"
2434 h263p_decoder_select="h263_decoder"
2435 h263p_encoder_select="h263_encoder"
2436 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2437 h264_decoder_suggest="error_resilience"
2438 hap_decoder_select="snappy texturedsp"
2439 hap_encoder_deps="libsnappy"
2440 hap_encoder_select="texturedspenc"
2441 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2442 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2443 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2444 iac_decoder_select="imc_decoder"
2445 imc_decoder_select="bswapdsp fft mdct sinewin"
2446 indeo3_decoder_select="hpeldsp"
2447 indeo4_decoder_select="ividsp"
2448 indeo5_decoder_select="ividsp"
2449 interplay_video_decoder_select="hpeldsp"
2450 jpegls_decoder_select="mjpeg_decoder"
2451 jv_decoder_select="blockdsp"
2452 lagarith_decoder_select="llviddsp"
2453 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2454 magicyuv_decoder_select="llviddsp"
2455 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2456 metasound_decoder_select="lsp mdct sinewin"
2457 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2458 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2459 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2460 mjpegb_decoder_select="mjpeg_decoder"
2461 mlp_decoder_select="mlp_parser"
2462 mlp_encoder_select="lpc"
2463 motionpixels_decoder_select="bswapdsp"
2464 mp1_decoder_select="mpegaudio"
2465 mp1float_decoder_select="mpegaudio"
2466 mp2_decoder_select="mpegaudio"
2467 mp2float_decoder_select="mpegaudio"
2468 mp3_decoder_select="mpegaudio"
2469 mp3adu_decoder_select="mpegaudio"
2470 mp3adufloat_decoder_select="mpegaudio"
2471 mp3float_decoder_select="mpegaudio"
2472 mp3on4_decoder_select="mpegaudio"
2473 mp3on4float_decoder_select="mpegaudio"
2474 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2475 mpc8_decoder_select="mpegaudiodsp"
2476 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2477 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2478 mpegvideo_decoder_select="mpegvideo"
2479 mpeg1video_decoder_select="mpegvideo"
2480 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2481 mpeg2video_decoder_select="mpegvideo"
2482 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2483 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2484 mpeg4_encoder_select="h263_encoder"
2485 msa1_decoder_select="mss34dsp"
2486 mscc_decoder_select="zlib"
2487 msmpeg4v1_decoder_select="h263_decoder"
2488 msmpeg4v2_decoder_select="h263_decoder"
2489 msmpeg4v2_encoder_select="h263_encoder"
2490 msmpeg4v3_decoder_select="h263_decoder"
2491 msmpeg4v3_encoder_select="h263_encoder"
2492 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2493 mts2_decoder_select="mss34dsp"
2494 mxpeg_decoder_select="mjpeg_decoder"
2495 nellymoser_decoder_select="mdct sinewin"
2496 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2497 nuv_decoder_select="idctdsp lzo"
2498 on2avc_decoder_select="mdct"
2499 opus_decoder_deps="swresample"
2500 opus_decoder_select="mdct15"
2501 opus_encoder_select="audio_frame_queue mdct15"
2502 png_decoder_select="zlib"
2503 png_encoder_select="llvidencdsp zlib"
2504 prores_decoder_select="blockdsp idctdsp"
2505 prores_encoder_select="fdctdsp"
2506 qcelp_decoder_select="lsp"
2507 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2508 ra_144_decoder_select="audiodsp"
2509 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2510 ralf_decoder_select="golomb"
2511 rawvideo_decoder_select="bswapdsp"
2512 rscc_decoder_select="zlib"
2513 rtjpeg_decoder_select="me_cmp"
2514 rv10_decoder_select="h263_decoder"
2515 rv10_encoder_select="h263_encoder"
2516 rv20_decoder_select="h263_decoder"
2517 rv20_encoder_select="h263_encoder"
2518 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 screenpresso_decoder_select="zlib"
2521 shorten_decoder_select="bswapdsp"
2522 sipr_decoder_select="lsp"
2523 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2524 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2525 sonic_decoder_select="golomb rangecoder"
2526 sonic_encoder_select="golomb rangecoder"
2527 sonic_ls_encoder_select="golomb rangecoder"
2528 sp5x_decoder_select="mjpeg_decoder"
2529 srgc_decoder_select="zlib"
2530 svq1_decoder_select="hpeldsp"
2531 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2532 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2533 svq3_decoder_suggest="zlib"
2534 tak_decoder_select="audiodsp"
2535 tdsc_decoder_select="zlib mjpeg_decoder"
2536 theora_decoder_select="vp3_decoder"
2537 thp_decoder_select="mjpeg_decoder"
2538 tiff_decoder_suggest="zlib lzma"
2539 tiff_encoder_suggest="zlib"
2540 truehd_decoder_select="mlp_parser"
2541 truehd_encoder_select="lpc"
2542 truemotion2_decoder_select="bswapdsp"
2543 truespeech_decoder_select="bswapdsp"
2544 tscc_decoder_select="zlib"
2545 twinvq_decoder_select="mdct lsp sinewin"
2546 txd_decoder_select="texturedsp"
2547 utvideo_decoder_select="bswapdsp llviddsp"
2548 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2549 vble_decoder_select="llviddsp"
2550 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2551 vc1_qsv_decoder_deps="libmfx"
2552 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2553 vc1image_decoder_select="vc1_decoder"
2554 vorbis_decoder_select="mdct"
2555 vorbis_encoder_select="mdct"
2556 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2557 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2558 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2559 vp6a_decoder_select="vp6_decoder"
2560 vp6f_decoder_select="vp6_decoder"
2561 vp7_decoder_select="h264pred videodsp vp8dsp"
2562 vp8_decoder_select="h264pred videodsp vp8dsp"
2563 vp9_decoder_select="videodsp vp9_parser"
2564 webp_decoder_select="vp8_decoder exif"
2565 wmalossless_decoder_select="llauddsp"
2566 wmapro_decoder_select="mdct sinewin wma_freqs"
2567 wmav1_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_encoder_select="mdct sinewin wma_freqs"
2569 wmav2_decoder_select="mdct sinewin wma_freqs"
2570 wmav2_encoder_select="mdct sinewin wma_freqs"
2571 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2572 wmv1_decoder_select="h263_decoder"
2573 wmv1_encoder_select="h263_encoder"
2574 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2575 wmv2_encoder_select="h263_encoder wmv2dsp"
2576 wmv3_decoder_select="vc1_decoder"
2577 wmv3image_decoder_select="wmv3_decoder"
2578 xma1_decoder_select="wmapro_decoder"
2579 xma2_decoder_select="wmapro_decoder"
2580 zerocodec_decoder_select="zlib"
2581 zlib_decoder_select="zlib"
2582 zlib_encoder_select="zlib"
2583 zmbv_decoder_select="zlib"
2584 zmbv_encoder_select="zlib"
2585
2586 # platform codecs
2587 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2588 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2589
2590 # hardware accelerators
2591 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2592 cuda_deps_any="dlopen LoadLibrary"
2593 cuvid_deps="cuda"
2594 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2595 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2596 dxva2_extralibs="-luser32"
2597 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2598 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2599 vda_deps="vda_framework pthreads"
2600 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2601 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2602 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2603 xvmc_deps="X11_extensions_XvMClib_h"
2604
2605 h263_vaapi_hwaccel_deps="vaapi"
2606 h263_vaapi_hwaccel_select="h263_decoder"
2607 h263_videotoolbox_hwaccel_deps="videotoolbox"
2608 h263_videotoolbox_hwaccel_select="h263_decoder"
2609 h264_cuvid_hwaccel_deps="cuda cuvid"
2610 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2611 h264_d3d11va_hwaccel_deps="d3d11va"
2612 h264_d3d11va_hwaccel_select="h264_decoder"
2613 h264_d3d11va2_hwaccel_deps="d3d11va"
2614 h264_d3d11va2_hwaccel_select="h264_decoder"
2615 h264_dxva2_hwaccel_deps="dxva2"
2616 h264_dxva2_hwaccel_select="h264_decoder"
2617 h264_mediacodec_hwaccel_deps="mediacodec"
2618 h264_mmal_hwaccel_deps="mmal"
2619 h264_qsv_hwaccel_deps="libmfx"
2620 h264_vaapi_hwaccel_deps="vaapi"
2621 h264_vaapi_hwaccel_select="h264_decoder"
2622 h264_vda_hwaccel_deps="vda"
2623 h264_vda_hwaccel_select="h264_decoder"
2624 h264_vda_old_hwaccel_deps="vda"
2625 h264_vda_old_hwaccel_select="h264_decoder"
2626 h264_vdpau_hwaccel_deps="vdpau"
2627 h264_vdpau_hwaccel_select="h264_decoder"
2628 h264_videotoolbox_hwaccel_deps="videotoolbox"
2629 h264_videotoolbox_hwaccel_select="h264_decoder"
2630 hevc_cuvid_hwaccel_deps="cuda cuvid"
2631 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2632 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2633 hevc_d3d11va_hwaccel_select="hevc_decoder"
2634 hevc_mediacodec_hwaccel_deps="mediacodec"
2635 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2636 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2637 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2638 hevc_dxva2_hwaccel_select="hevc_decoder"
2639 hevc_qsv_hwaccel_deps="libmfx"
2640 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2641 hevc_vaapi_hwaccel_select="hevc_decoder"
2642 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2643 hevc_vdpau_hwaccel_select="hevc_decoder"
2644 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2645 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2646 mpeg_xvmc_hwaccel_deps="xvmc"
2647 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2648 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2649 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2650 mpeg1_vdpau_hwaccel_deps="vdpau"
2651 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2652 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2653 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2654 mpeg1_xvmc_hwaccel_deps="xvmc"
2655 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2656 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2657 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2658 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2659 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2660 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2661 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2662 mpeg2_dxva2_hwaccel_deps="dxva2"
2663 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2665 mpeg2_mmal_hwaccel_deps="mmal"
2666 mpeg2_qsv_hwaccel_deps="libmfx"
2667 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2668 mpeg2_vaapi_hwaccel_deps="vaapi"
2669 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_vdpau_hwaccel_deps="vdpau"
2671 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2673 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2674 mpeg2_xvmc_hwaccel_deps="xvmc"
2675 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2676 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2677 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2678 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2679 mpeg4_mmal_hwaccel_deps="mmal"
2680 mpeg4_vaapi_hwaccel_deps="vaapi"
2681 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2682 mpeg4_vdpau_hwaccel_deps="vdpau"
2683 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2684 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2685 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2686 vc1_cuvid_hwaccel_deps="cuda cuvid"
2687 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2688 vc1_d3d11va_hwaccel_deps="d3d11va"
2689 vc1_d3d11va_hwaccel_select="vc1_decoder"
2690 vc1_d3d11va2_hwaccel_deps="d3d11va"
2691 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2692 vc1_dxva2_hwaccel_deps="dxva2"
2693 vc1_dxva2_hwaccel_select="vc1_decoder"
2694 vc1_mmal_hwaccel_deps="mmal"
2695 vc1_qsv_hwaccel_deps="libmfx"
2696 vc1_qsv_hwaccel_select="qsvdec_vc1"
2697 vc1_vaapi_hwaccel_deps="vaapi"
2698 vc1_vaapi_hwaccel_select="vc1_decoder"
2699 vc1_vdpau_hwaccel_deps="vdpau"
2700 vc1_vdpau_hwaccel_select="vc1_decoder"
2701 vp8_cuvid_hwaccel_deps="cuda cuvid"
2702 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2703 vp9_cuvid_hwaccel_deps="cuda cuvid"
2704 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2705 vp8_mediacodec_hwaccel_deps="mediacodec"
2706 vp8_qsv_hwaccel_deps="libmfx"
2707 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2708 vp9_d3d11va_hwaccel_select="vp9_decoder"
2709 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2710 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2711 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2712 vp9_dxva2_hwaccel_select="vp9_decoder"
2713 vp9_mediacodec_hwaccel_deps="mediacodec"
2714 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2715 vp9_vaapi_hwaccel_select="vp9_decoder"
2716 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2717 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2718 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2719 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2720 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2721
2722 # hardware-accelerated codecs
2723 omx_deps="dlopen pthreads"
2724 omx_extralibs='$ldl'
2725 omx_rpi_select="omx"
2726 qsvdec_select="qsv"
2727 qsvenc_select="qsv"
2728 vaapi_encode_deps="vaapi"
2729
2730 hwupload_cuda_filter_deps="cuda"
2731 scale_npp_filter_deps="cuda libnpp"
2732 scale_cuda_filter_deps="cuda_sdk"
2733
2734 nvenc_deps="cuda"
2735 nvenc_deps_any="dlopen LoadLibrary"
2736 nvenc_encoder_deps="nvenc"
2737
2738 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2739 h264_cuvid_decoder_deps="cuda cuvid"
2740 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2741 h264_mediacodec_decoder_deps="mediacodec"
2742 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2743 h264_mmal_decoder_deps="mmal"
2744 h264_nvenc_encoder_deps="nvenc"
2745 h264_omx_encoder_deps="omx"
2746 h264_qsv_decoder_deps="libmfx"
2747 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2748 h264_qsv_encoder_deps="libmfx"
2749 h264_qsv_encoder_select="qsvenc"
2750 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2751 h264_vaapi_encoder_select="vaapi_encode golomb"
2752 h264_vda_decoder_deps="vda"
2753 h264_vda_decoder_select="h264_decoder"
2754 h264_vdpau_decoder_deps="vdpau"
2755 h264_vdpau_decoder_select="h264_decoder"
2756 hevc_cuvid_decoder_deps="cuda cuvid"
2757 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2758 hevc_mediacodec_decoder_deps="mediacodec"
2759 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2760 hevc_nvenc_encoder_deps="nvenc"
2761 hevc_qsv_decoder_deps="libmfx"
2762 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2763 hevc_qsv_encoder_deps="libmfx"
2764 hevc_qsv_encoder_select="hevcparse qsvenc"
2765 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2766 hevc_vaapi_encoder_select="vaapi_encode golomb"
2767 mjpeg_cuvid_decoder_deps="cuda cuvid"
2768 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2769 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2770 mpeg1_cuvid_decoder_deps="cuda cuvid"
2771 mpeg1_vdpau_decoder_deps="vdpau"
2772 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2773 mpeg2_crystalhd_decoder_select="crystalhd"
2774 mpeg2_cuvid_decoder_deps="cuda cuvid"
2775 mpeg2_mmal_decoder_deps="mmal"
2776 mpeg2_mediacodec_decoder_deps="mediacodec"
2777 mpeg2_qsv_decoder_deps="libmfx"
2778 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2779 mpeg2_qsv_encoder_deps="libmfx"
2780 mpeg2_qsv_encoder_select="qsvenc"
2781 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2782 mpeg2_vaapi_encoder_select="vaapi_encode"
2783 mpeg4_crystalhd_decoder_select="crystalhd"
2784 mpeg4_cuvid_decoder_deps="cuda cuvid"
2785 mpeg4_mediacodec_decoder_deps="mediacodec"
2786 mpeg4_mmal_decoder_deps="mmal"
2787 mpeg4_omx_encoder_deps="omx"
2788 mpeg4_vdpau_decoder_deps="vdpau"
2789 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2790 mpeg_vdpau_decoder_deps="vdpau"
2791 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2792 msmpeg4_crystalhd_decoder_select="crystalhd"
2793 nvenc_h264_encoder_select="h264_nvenc_encoder"
2794 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2795 vc1_crystalhd_decoder_select="crystalhd"
2796 vc1_cuvid_decoder_deps="cuda cuvid"
2797 vc1_mmal_decoder_deps="mmal"
2798 vc1_vdpau_decoder_deps="vdpau"
2799 vc1_vdpau_decoder_select="vc1_decoder"
2800 vp8_cuvid_decoder_deps="cuda cuvid"
2801 vp8_mediacodec_decoder_deps="mediacodec"
2802 vp8_qsv_decoder_deps="libmfx"
2803 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2804 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2805 vp8_vaapi_encoder_select="vaapi_encode"
2806 vp9_cuvid_decoder_deps="cuda cuvid"
2807 vp9_mediacodec_decoder_deps="mediacodec"
2808 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2809 vp9_vaapi_encoder_select="vaapi_encode"
2810 wmv3_crystalhd_decoder_select="crystalhd"
2811 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2812
2813 # parsers
2814 h264_parser_select="golomb h264dsp h264parse"
2815 hevc_parser_select="hevcparse"
2816 mpegaudio_parser_select="mpegaudioheader"
2817 mpegvideo_parser_select="mpegvideo"
2818 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2819 vc1_parser_select="vc1dsp"
2820
2821 # bitstream_filters
2822 mjpeg2jpeg_bsf_select="jpegtables"
2823
2824 # external libraries
2825 aac_at_decoder_deps="audiotoolbox"
2826 ac3_at_decoder_deps="audiotoolbox"
2827 ac3_at_decoder_select="ac3_parser"
2828 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2829 alac_at_decoder_deps="audiotoolbox"
2830 amr_nb_at_decoder_deps="audiotoolbox"
2831 avisynth_deps_any="dlopen LoadLibrary"
2832 avisynth_demuxer_deps="avisynth"
2833 avisynth_demuxer_select="riffdec"
2834 eac3_at_decoder_deps="audiotoolbox"
2835 eac3_at_decoder_select="ac3_parser"
2836 gsm_ms_at_decoder_deps="audiotoolbox"
2837 ilbc_at_decoder_deps="audiotoolbox"
2838 mp1_at_decoder_deps="audiotoolbox"
2839 mp2_at_decoder_deps="audiotoolbox"
2840 mp3_at_decoder_deps="audiotoolbox"
2841 mp1_at_decoder_select="mpegaudioheader"
2842 mp2_at_decoder_select="mpegaudioheader"
2843 mp3_at_decoder_select="mpegaudioheader"
2844 pcm_alaw_at_decoder_deps="audiotoolbox"
2845 pcm_mulaw_at_decoder_deps="audiotoolbox"
2846 qdmc_at_decoder_deps="audiotoolbox"
2847 qdm2_at_decoder_deps="audiotoolbox"
2848 aac_at_encoder_deps="audiotoolbox"
2849 aac_at_encoder_select="audio_frame_queue"
2850 alac_at_encoder_deps="audiotoolbox"
2851 alac_at_encoder_select="audio_frame_queue"
2852 ilbc_at_encoder_deps="audiotoolbox"
2853 ilbc_at_encoder_select="audio_frame_queue"
2854 pcm_alaw_at_encoder_deps="audiotoolbox"
2855 pcm_alaw_at_encoder_select="audio_frame_queue"
2856 pcm_mulaw_at_encoder_deps="audiotoolbox"
2857 pcm_mulaw_at_encoder_select="audio_frame_queue"
2858 chromaprint_muxer_deps="chromaprint"
2859 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2860 libcelt_decoder_deps="libcelt"
2861 libfdk_aac_decoder_deps="libfdk_aac"
2862 libfdk_aac_encoder_deps="libfdk_aac"
2863 libfdk_aac_encoder_select="audio_frame_queue"
2864 libgme_demuxer_deps="libgme"
2865 libgsm_decoder_deps="libgsm"
2866 libgsm_encoder_deps="libgsm"
2867 libgsm_ms_decoder_deps="libgsm"
2868 libgsm_ms_encoder_deps="libgsm"
2869 libilbc_decoder_deps="libilbc"
2870 libilbc_encoder_deps="libilbc"
2871 libkvazaar_encoder_deps="libkvazaar"
2872 libmodplug_demuxer_deps="libmodplug"
2873 libmp3lame_encoder_deps="libmp3lame"
2874 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2875 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2876 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2877 libopencore_amrnb_encoder_select="audio_frame_queue"
2878 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2879 libopenh264_decoder_deps="libopenh264"
2880 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2881 libopenh264_encoder_deps="libopenh264"
2882 libopenjpeg_decoder_deps="libopenjpeg"
2883 libopenjpeg_encoder_deps="libopenjpeg"
2884 libopenmpt_demuxer_deps="libopenmpt"
2885 libopus_decoder_deps="libopus"
2886 libopus_encoder_deps="libopus"
2887 libopus_encoder_select="audio_frame_queue"
2888 librsvg_decoder_deps="librsvg"
2889 libshine_encoder_deps="libshine"
2890 libshine_encoder_select="audio_frame_queue"
2891 libspeex_decoder_deps="libspeex"
2892 libspeex_encoder_deps="libspeex"
2893 libspeex_encoder_select="audio_frame_queue"
2894 libtheora_encoder_deps="libtheora"
2895 libtwolame_encoder_deps="libtwolame"
2896 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2897 libvorbis_decoder_deps="libvorbis"
2898 libvorbis_encoder_deps="libvorbis"
2899 libvorbis_encoder_select="audio_frame_queue"
2900 libvpx_vp8_decoder_deps="libvpx"
2901 libvpx_vp8_encoder_deps="libvpx"
2902 libvpx_vp9_decoder_deps="libvpx"
2903 libvpx_vp9_encoder_deps="libvpx"
2904 libwavpack_encoder_deps="libwavpack"
2905 libwavpack_encoder_select="audio_frame_queue"
2906 libwebp_encoder_deps="libwebp"
2907 libwebp_anim_encoder_deps="libwebp"
2908 libx262_encoder_deps="libx262"
2909 libx264_encoder_deps="libx264"
2910 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2911 libx264rgb_encoder_select="libx264_encoder"
2912 libx265_encoder_deps="libx265"
2913 libxavs_encoder_deps="libxavs"
2914 libxvid_encoder_deps="libxvid"
2915 libzvbi_teletext_decoder_deps="libzvbi"
2916 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2917 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2918 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2919 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2920 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2921
2922 # demuxers / muxers
2923 ac3_demuxer_select="ac3_parser"
2924 aiff_muxer_select="iso_media"
2925 asf_demuxer_select="riffdec"
2926 asf_o_demuxer_select="riffdec"
2927 asf_muxer_select="riffenc"
2928 asf_stream_muxer_select="asf_muxer"
2929 avi_demuxer_select="iso_media riffdec exif"
2930 avi_muxer_select="riffenc"
2931 caf_demuxer_select="iso_media riffdec"
2932 caf_muxer_select="iso_media"
2933 dash_muxer_select="mp4_muxer"
2934 dirac_demuxer_select="dirac_parser"
2935 dts_demuxer_select="dca_parser"
2936 dtshd_demuxer_select="dca_parser"
2937 dv_demuxer_select="dvprofile"
2938 dv_muxer_select="dvprofile"
2939 dxa_demuxer_select="riffdec"
2940 eac3_demuxer_select="ac3_parser"
2941 f4v_muxer_select="mov_muxer"
2942 fifo_muxer_deps="threads"
2943 flac_demuxer_select="flac_parser"
2944 hds_muxer_select="flv_muxer"
2945 hls_muxer_select="mpegts_muxer"
2946 image2_alias_pix_demuxer_select="image2_demuxer"
2947 image2_brender_pix_demuxer_select="image2_demuxer"
2948 ipod_muxer_select="mov_muxer"
2949 ismv_muxer_select="mov_muxer"
2950 matroska_audio_muxer_select="matroska_muxer"
2951 matroska_demuxer_select="iso_media riffdec"
2952 matroska_demuxer_suggest="bzlib lzo zlib"
2953 matroska_muxer_select="iso_media riffenc"
2954 mmf_muxer_select="riffenc"
2955 mov_demuxer_select="iso_media riffdec"
2956 mov_demuxer_suggest="zlib"
2957 mov_muxer_select="iso_media riffenc rtpenc_chain"
2958 mp3_demuxer_select="mpegaudio_parser"
2959 mp3_muxer_select="mpegaudioheader"
2960 mp4_muxer_select="mov_muxer"
2961 mpegts_demuxer_select="iso_media"
2962 mpegts_muxer_select="adts_muxer latm_muxer"
2963 mpegtsraw_demuxer_select="mpegts_demuxer"
2964 mxf_d10_muxer_select="mxf_muxer"
2965 mxf_opatom_muxer_select="mxf_muxer"
2966 nut_muxer_select="riffenc"
2967 nuv_demuxer_select="riffdec"
2968 oga_muxer_select="ogg_muxer"
2969 ogg_demuxer_select="dirac_parse"
2970 ogv_muxer_select="ogg_muxer"
2971 opus_muxer_select="ogg_muxer"
2972 psp_muxer_select="mov_muxer"
2973 rtp_demuxer_select="sdp_demuxer"
2974 rtp_muxer_select="golomb"
2975 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2976 rtsp_demuxer_select="http_protocol rtpdec"
2977 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2978 sap_demuxer_select="sdp_demuxer"
2979 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2980 sdp_demuxer_select="rtpdec"
2981 smoothstreaming_muxer_select="ismv_muxer"
2982 spdif_muxer_select="aac_parser"
2983 spx_muxer_select="ogg_muxer"
2984 swf_demuxer_suggest="zlib"
2985 tak_demuxer_select="tak_parser"
2986 tg2_muxer_select="mov_muxer"
2987 tgp_muxer_select="mov_muxer"
2988 vobsub_demuxer_select="mpegps_demuxer"
2989 w64_demuxer_select="wav_demuxer"
2990 w64_muxer_select="wav_muxer"
2991 wav_demuxer_select="riffdec"
2992 wav_muxer_select="riffenc"
2993 webm_muxer_select="iso_media riffenc"
2994 webm_dash_manifest_demuxer_select="matroska_demuxer"
2995 wtv_demuxer_select="mpegts_demuxer riffdec"
2996 wtv_muxer_select="mpegts_muxer riffenc"
2997 xmv_demuxer_select="riffdec"
2998 xwma_demuxer_select="riffdec"
2999
3000 # indevs / outdevs
3001 alsa_indev_deps="alsa"
3002 alsa_outdev_deps="alsa"
3003 avfoundation_indev_deps="pthreads"
3004 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
3005 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3006 caca_outdev_deps="libcaca"
3007 decklink_indev_deps="decklink threads"
3008 decklink_indev_extralibs="-lstdc++"
3009 decklink_outdev_deps="decklink threads"
3010 decklink_outdev_extralibs="-lstdc++"
3011 dshow_indev_deps="IBaseFilter"
3012 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3013 dv1394_indev_deps="dv1394"
3014 dv1394_indev_select="dv_demuxer"
3015 fbdev_indev_deps="linux_fb_h"
3016 fbdev_outdev_deps="linux_fb_h"
3017 gdigrab_indev_deps="CreateDIBSection"
3018 gdigrab_indev_extralibs="-lgdi32"
3019 gdigrab_indev_select="bmp_decoder"
3020 iec61883_indev_deps="libiec61883"
3021 jack_indev_deps="jack"
3022 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3023 lavfi_indev_deps="avfilter"
3024 libcdio_indev_deps="libcdio"
3025 libdc1394_indev_deps="libdc1394"
3026 libv4l2_indev_deps="libv4l2"
3027 openal_indev_deps="openal"
3028 opengl_outdev_deps="opengl"
3029 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3030 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3031 pulse_indev_deps="libpulse"
3032 pulse_outdev_deps="libpulse"
3033 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3034 qtkit_indev_select="qtkit"
3035 sdl2_outdev_deps="sdl2"
3036 sndio_indev_deps="sndio"
3037 sndio_outdev_deps="sndio"
3038 v4l_indev_deps="linux_videodev_h"
3039 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3040 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3041 vfwcap_indev_deps="vfw32 vfwcap_defines"
3042 xcbgrab_indev_deps="libxcb"
3043 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3044 xv_outdev_extralibs="-lXv -lX11 -lXext"
3045
3046 # protocols
3047 async_protocol_deps="threads"
3048 bluray_protocol_deps="libbluray"
3049 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3050 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3051 ffrtmpcrypt_protocol_select="tcp_protocol"
3052 ffrtmphttp_protocol_deps="!librtmp_protocol"
3053 ffrtmphttp_protocol_select="http_protocol"
3054 ftp_protocol_select="tcp_protocol"
3055 gopher_protocol_select="network"
3056 http_protocol_select="tcp_protocol"
3057 httpproxy_protocol_select="tcp_protocol"
3058 https_protocol_select="tls_protocol"
3059 icecast_protocol_select="http_protocol"
3060 librtmp_protocol_deps="librtmp"
3061 librtmpe_protocol_deps="librtmp"
3062 librtmps_protocol_deps="librtmp"
3063 librtmpt_protocol_deps="librtmp"
3064 librtmpte_protocol_deps="librtmp"
3065 libsmbclient_protocol_deps="libsmbclient gplv3"
3066 libssh_protocol_deps="libssh"
3067 mmsh_protocol_select="http_protocol"
3068 mmst_protocol_select="network"
3069 rtmp_protocol_deps="!librtmp_protocol"
3070 rtmp_protocol_select="tcp_protocol"
3071 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3072 rtmps_protocol_deps="!librtmp_protocol"
3073 rtmps_protocol_select="tls_protocol"
3074 rtmpt_protocol_select="ffrtmphttp_protocol"
3075 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3076 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3077 rtp_protocol_select="udp_protocol"
3078 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3079 sctp_protocol_select="network"
3080 srtp_protocol_select="rtp_protocol srtp"
3081 tcp_protocol_select="network"
3082 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3083 tls_gnutls_protocol_select="tcp_protocol"
3084 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3085 tls_openssl_protocol_select="tcp_protocol"
3086 tls_schannel_protocol_deps="schannel"
3087 tls_schannel_protocol_select="tcp_protocol"
3088 tls_securetransport_protocol_deps="securetransport"
3089 tls_securetransport_protocol_select="tcp_protocol"
3090 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3091 udp_protocol_select="network"
3092 udplite_protocol_select="network"
3093 unix_protocol_deps="sys_un_h"
3094 unix_protocol_select="network"
3095
3096 # filters
3097 afftfilt_filter_deps="avcodec"
3098 afftfilt_filter_select="fft"
3099 afir_filter_deps="avcodec"
3100 afir_filter_select="fft"
3101 amovie_filter_deps="avcodec avformat"
3102 aresample_filter_deps="swresample"
3103 ass_filter_deps="libass"
3104 atempo_filter_deps="avcodec"
3105 atempo_filter_select="rdft"
3106 azmq_filter_deps="libzmq"
3107 blackframe_filter_deps="gpl"
3108 boxblur_filter_deps="gpl"
3109 bs2b_filter_deps="libbs2b"
3110 colormatrix_filter_deps="gpl"
3111 cover_rect_filter_deps="avcodec avformat gpl"
3112 cropdetect_filter_deps="gpl"
3113 deinterlace_qsv_filter_deps="libmfx"
3114 deinterlace_vaapi_filter_deps="vaapi"
3115 delogo_filter_deps="gpl"
3116 deshake_filter_select="pixelutils"
3117 drawtext_filter_deps="libfreetype"
3118 elbg_filter_deps="avcodec"
3119 eq_filter_deps="gpl"
3120 fftfilt_filter_deps="avcodec"
3121 fftfilt_filter_select="rdft"
3122 find_rect_filter_deps="avcodec avformat gpl"
3123 firequalizer_filter_deps="avcodec"
3124 firequalizer_filter_select="rdft"
3125 flite_filter_deps="libflite"
3126 framerate_filter_select="pixelutils"
3127 frei0r_filter_deps="frei0r dlopen"
3128 frei0r_src_filter_deps="frei0r dlopen"
3129 fspp_filter_deps="gpl"
3130 geq_filter_deps="gpl"
3131 histeq_filter_deps="gpl"
3132 hqdn3d_filter_deps="gpl"
3133 interlace_filter_deps="gpl"
3134 kerndeint_filter_deps="gpl"
3135 ladspa_filter_deps="ladspa dlopen"
3136 mcdeint_filter_deps="avcodec gpl"
3137 movie_filter_deps="avcodec avformat"
3138 mpdecimate_filter_deps="gpl"
3139 mpdecimate_filter_select="pixelutils"
3140 mptestsrc_filter_deps="gpl"
3141 negate_filter_deps="lut_filter"
3142 nnedi_filter_deps="gpl"
3143 ocr_filter_deps="libtesseract"
3144 ocv_filter_deps="libopencv"
3145 owdenoise_filter_deps="gpl"
3146 pan_filter_deps="swresample"
3147 perspective_filter_deps="gpl"
3148 phase_filter_deps="gpl"
3149 pp7_filter_deps="gpl"
3150 pp_filter_deps="gpl postproc"
3151 pullup_filter_deps="gpl"
3152 removelogo_filter_deps="avcodec avformat swscale"
3153 repeatfields_filter_deps="gpl"
3154 resample_filter_deps="avresample"
3155 rubberband_filter_deps="librubberband"
3156 sab_filter_deps="gpl swscale"
3157 scale2ref_filter_deps="swscale"
3158 scale_filter_deps="swscale"
3159 scale_qsv_filter_deps="libmfx"
3160 select_filter_select="pixelutils"
3161 showcqt_filter_deps="avcodec avformat swscale"
3162 showcqt_filter_select="fft"
3163 showfreqs_filter_deps="avcodec"
3164 showfreqs_filter_select="fft"
3165 showspectrum_filter_deps="avcodec"
3166 showspectrum_filter_select="fft"
3167 showspectrumpic_filter_deps="avcodec"
3168 showspectrumpic_filter_select="fft"
3169 signature_filter_deps="gpl avcodec avformat"
3170 smartblur_filter_deps="gpl swscale"
3171 sofalizer_filter_deps="libmysofa avcodec"
3172 sofalizer_filter_select="fft"
3173 spectrumsynth_filter_deps="avcodec"
3174 spectrumsynth_filter_select="fft"
3175 spp_filter_deps="gpl avcodec"
3176 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3177 stereo3d_filter_deps="gpl"
3178 subtitles_filter_deps="avformat avcodec libass"
3179 super2xsai_filter_deps="gpl"
3180 pixfmts_super2xsai_test_deps="super2xsai_filter"
3181 tinterlace_filter_deps="gpl"
3182 tinterlace_merge_test_deps="tinterlace_filter"
3183 tinterlace_pad_test_deps="tinterlace_filter"
3184 uspp_filter_deps="gpl avcodec"
3185 vaguedenoiser_filter_deps="gpl"
3186 vidstabdetect_filter_deps="libvidstab"
3187 vidstabtransform_filter_deps="libvidstab"
3188 zmq_filter_deps="libzmq"
3189 zoompan_filter_deps="swscale"
3190 zscale_filter_deps="libzimg"
3191 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3192
3193 # examples
3194 avio_dir_cmd_deps="avformat avutil"
3195 avio_reading_deps="avformat avcodec avutil"
3196 decode_audio_example_deps="avcodec avutil"
3197 decode_video_example_deps="avcodec avutil"
3198 demuxing_decoding_example_deps="avcodec avformat avutil"
3199 encode_audio_example_deps="avcodec avutil"
3200 encode_video_example_deps="avcodec avutil"
3201 extract_mvs_example_deps="avcodec avformat avutil"
3202 filter_audio_example_deps="avfilter avutil"
3203 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3204 filtering_video_example_deps="avfilter avcodec avformat avutil"
3205 http_multiclient_example_deps="avformat avutil fork"
3206 metadata_example_deps="avformat avutil"
3207 muxing_example_deps="avcodec avformat avutil swscale"
3208 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3209 remuxing_example_deps="avcodec avformat avutil"
3210 resampling_audio_example_deps="avutil swresample"
3211 scaling_video_example_deps="avutil swscale"
3212 transcode_aac_example_deps="avcodec avformat swresample"
3213 transcoding_example_deps="avfilter avcodec avformat avutil"
3214
3215 # libraries, in linking order
3216 avcodec_deps="avutil"
3217 avcodec_select="null_bsf"
3218 avdevice_deps="avformat avcodec avutil"
3219 avfilter_deps="avutil"
3220 avformat_deps="avcodec avutil"
3221 avresample_deps="avutil"
3222 postproc_deps="avutil gpl"
3223 swresample_deps="avutil"
3224 swscale_deps="avutil"
3225
3226 # programs
3227 ffmpeg_deps="avcodec avfilter avformat swresample"
3228 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3229                null_filter
3230                trim_filter"
3231 ffplay_deps="avcodec avformat swscale swresample sdl2"
3232 ffplay_extralibs='$sdl2_extralibs'
3233 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3234 ffprobe_deps="avcodec avformat"
3235 ffserver_deps="avformat fork sarestart"
3236 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3237
3238 # documentation
3239 podpages_deps="perl"
3240 manpages_deps="perl pod2man"
3241 htmlpages_deps="perl"
3242 htmlpages_deps_any="makeinfo_html texi2html"
3243 txtpages_deps="perl makeinfo"
3244 doc_deps_any="manpages htmlpages podpages txtpages"
3245
3246 # default parameters
3247
3248 logfile="ffbuild/config.log"
3249
3250 # installation paths
3251 prefix_default="/usr/local"
3252 bindir_default='${prefix}/bin'
3253 datadir_default='${prefix}/share/ffmpeg'
3254 docdir_default='${prefix}/share/doc/ffmpeg'
3255 incdir_default='${prefix}/include'
3256 libdir_default='${prefix}/lib'
3257 mandir_default='${prefix}/share/man'
3258
3259 # toolchain
3260 ar_default="ar"
3261 cc_default="gcc"
3262 cxx_default="g++"
3263 host_cc_default="gcc"
3264 doxygen_default="doxygen"
3265 install="install"
3266 ln_s_default="ln -s -f"
3267 nm_default="nm -g"
3268 pkg_config_default=pkg-config
3269 ranlib_default="ranlib"
3270 strip_default="strip"
3271 version_script='--version-script'
3272 x86asmexe_default="nasm"
3273 windres_default="windres"
3274 nvcc_default="nvcc"
3275 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3276
3277 # OS
3278 target_os_default=$(tolower $(uname -s))
3279 host_os=$target_os_default
3280
3281 # machine
3282 if test "$target_os_default" = aix; then
3283     arch_default=$(uname -p)
3284     strip_default="strip -X32_64"
3285 else
3286     arch_default=$(uname -m)
3287 fi
3288 cpu="generic"
3289 intrinsics="none"
3290
3291 # configurable options
3292 enable $PROGRAM_LIST
3293 enable $DOCUMENT_LIST
3294 enable $EXAMPLE_LIST
3295 enable $(filter_out avresample $LIBRARY_LIST)
3296 enable stripping
3297
3298 enable asm
3299 enable debug
3300 enable doc
3301 enable faan faandct faanidct
3302 enable optimizations
3303 enable runtime_cpudetect
3304 enable safe_bitstream_reader
3305 enable static
3306 enable swscale_alpha
3307 enable valgrind_backtrace
3308
3309 sws_max_filter_size_default=256
3310 set_default sws_max_filter_size
3311
3312 # build settings
3313 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3314 LIBPREF="lib"
3315 LIBSUF=".a"
3316 FULLNAME='$(NAME)$(BUILDSUF)'
3317 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3318 SLIBPREF="lib"
3319 SLIBSUF=".so"
3320 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3321 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3322 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3323 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3324 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3325 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3326 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3327
3328 asflags_filter=echo
3329 cflags_filter=echo
3330 ldflags_filter=echo
3331
3332 AS_C='-c'
3333 AS_O='-o $@'
3334 CC_C='-c'
3335 CC_E='-E -o $@'
3336 CC_O='-o $@'
3337 CXX_C='-c'
3338 CXX_O='-o $@'
3339 OBJCC_C='-c'
3340 OBJCC_E='-E -o $@'
3341 OBJCC_O='-o $@'
3342 X86ASM_O='-o $@'
3343 LD_O='-o $@'
3344 LD_LIB='-l%'
3345 LD_PATH='-L'
3346 HOSTCC_C='-c'
3347 HOSTCC_E='-E -o $@'
3348 HOSTCC_O='-o $@'
3349 HOSTLD_O='-o $@'
3350 NVCC_C='-c'
3351 NVCC_O='-o $@'
3352
3353 host_extralibs='-lm'
3354 host_cflags_filter=echo
3355 host_ldflags_filter=echo
3356
3357 target_path='$(CURDIR)'
3358
3359 # since the object filename is not given with the -MM flag, the compiler
3360 # is only able to print the basename, and we must add the path ourselves
3361 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3362 DEPFLAGS='-MM'
3363
3364 mkdir -p ffbuild
3365
3366 # find source path
3367 if test -f configure; then
3368     source_path=.
3369 else
3370     source_path=$(cd $(dirname "$0"); pwd)
3371     case "$source_path" in
3372         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3373     esac
3374     test -e "$source_path/config.h" &&
3375         die "Out of tree builds are impossible with config.h in source dir."
3376 fi
3377
3378 for v in "$@"; do
3379     r=${v#*=}
3380     l=${v%"$r"}
3381     r=$(sh_quote "$r")
3382     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3383 done
3384
3385 find_things(){
3386     thing=$1
3387     pattern=$2
3388     file=$source_path/$3
3389     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3390 }
3391
3392 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3393 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3394 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3395 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3396 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3397 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3398 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3399 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3400 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3401
3402 find_things_extern(){
3403     thing=$1
3404     pattern=$2
3405     file=$source_path/$3
3406     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3407 }
3408
3409 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3410 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3411
3412 ALL_COMPONENTS="
3413     $BSF_LIST
3414     $DECODER_LIST
3415     $DEMUXER_LIST
3416     $ENCODER_LIST
3417     $FILTER_LIST
3418     $HWACCEL_LIST
3419     $INDEV_LIST
3420     $MUXER_LIST
3421     $OUTDEV_LIST
3422     $PARSER_LIST
3423     $PROTOCOL_LIST
3424 "
3425
3426 for n in $COMPONENT_LIST; do
3427     v=$(toupper ${n%s})_LIST
3428     eval enable \$$v
3429     eval ${n}_if_any="\$$v"
3430 done
3431
3432 enable $ARCH_EXT_LIST
3433
3434 die_unknown(){
3435     echo "Unknown option \"$1\"."
3436     echo "See $0 --help for available options."
3437     exit 1
3438 }
3439
3440 print_in_columns() {
3441     cols=$(expr $ncols / 24)
3442     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3443 }
3444
3445 show_list() {
3446     suffix=_$1
3447     shift
3448     echo $* | sed s/$suffix//g | print_in_columns
3449     exit 0
3450 }
3451
3452 rand_list(){
3453     IFS=', '
3454     set -- $*
3455     unset IFS
3456     for thing; do
3457         comp=${thing%:*}
3458         prob=${thing#$comp}
3459         prob=${prob#:}
3460         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3461         echo "prob ${prob:-0.5}"
3462         printf '%s\n' $comp
3463     done
3464 }
3465
3466 do_random(){
3467     action=$1
3468     shift
3469     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3470     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3471 }
3472
3473 for opt do
3474     optval="${opt#*=}"
3475     case "$opt" in
3476         --extra-ldflags=*)
3477             add_ldflags $optval
3478         ;;
3479         --extra-ldexeflags=*)
3480             add_ldexeflags $optval
3481         ;;
3482         --extra-ldlibflags=*)
3483             add_ldlibflags $optval
3484         ;;
3485         --extra-libs=*)
3486             add_extralibs $optval
3487         ;;
3488         --disable-devices)
3489             disable $INDEV_LIST $OUTDEV_LIST
3490         ;;
3491         --enable-debug=*)
3492             debuglevel="$optval"
3493         ;;
3494         --disable-programs)
3495             disable $PROGRAM_LIST
3496         ;;
3497         --disable-everything)
3498             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3499         ;;
3500         --disable-all)
3501             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3502             disable $LIBRARY_LIST $PROGRAM_LIST doc
3503             enable avutil
3504         ;;
3505         --enable-random|--disable-random)
3506             action=${opt%%-random}
3507             do_random ${action#--} $COMPONENT_LIST
3508         ;;
3509         --enable-random=*|--disable-random=*)
3510             action=${opt%%-random=*}
3511             do_random ${action#--} $optval
3512         ;;
3513         --enable-*=*|--disable-*=*)
3514             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3515             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3516             eval list=\$$(toupper $thing)_LIST
3517             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3518             list=$(filter "$name" $list)
3519             [ "$list" = "" ] && warn "Option $opt did not match anything"
3520             $action $list
3521         ;;
3522         --enable-yasm|--disable-yasm)
3523             warn "The ${opt} option is only provided for compatibility and will be\n"\
3524                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3525             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3526         ;;
3527         --yasmexe=*)
3528             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3529                  "removed in the future. Use --x86asmexe instead."
3530             x86asmexe="$optval"
3531         ;;
3532         --enable-?*|--disable-?*)
3533             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3534             if is_in $option $COMPONENT_LIST; then
3535                 test $action = disable && action=unset
3536                 eval $action \$$(toupper ${option%s})_LIST
3537             elif is_in $option $CMDLINE_SELECT; then
3538                 $action $option
3539             else
3540                 die_unknown $opt
3541             fi
3542         ;;
3543         --list-*)
3544             NAME="${opt#--list-}"
3545             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3546             NAME=${NAME%s}
3547             eval show_list $NAME \$$(toupper $NAME)_LIST
3548         ;;
3549         --help|-h) show_help
3550         ;;
3551         --quiet|-q) quiet=yes
3552         ;;
3553         --fatal-warnings) enable fatal_warnings
3554         ;;
3555         --libfuzzer=*)
3556             libfuzzer_path="$optval"
3557         ;;
3558         *)
3559             optname="${opt%%=*}"
3560             optname="${optname#--}"
3561             optname=$(echo "$optname" | sed 's/-/_/g')
3562             if is_in $optname $CMDLINE_SET; then
3563                 eval $optname='$optval'
3564             elif is_in $optname $CMDLINE_APPEND; then
3565                 append $optname "$optval"
3566             else
3567                 die_unknown $opt
3568             fi
3569         ;;
3570     esac
3571 done
3572
3573 for e in $env; do
3574     eval "export $e"
3575 done
3576
3577 # Mark specifically enabled, but normally autodetected libraries as requested.
3578 for lib in $AUTODETECT_LIBS; do
3579     enabled $lib && request $lib
3580 done
3581
3582 # Enable platform codecs by default.
3583 enable_weak audiotoolbox
3584
3585 # Enable hwaccels by default.
3586 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3587 enable_weak xlib
3588
3589 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3590
3591 disabled logging && logfile=/dev/null
3592
3593 die_license_disabled() {
3594     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3595 }
3596
3597 die_license_disabled_gpl() {
3598     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3599 }
3600
3601 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3602 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3603
3604 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3605 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3606
3607 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3608
3609 # Disable all the library-specific components if the library itself
3610 # is disabled, see AVCODEC_LIST and following _LIST variables.
3611
3612 disable_components(){
3613     disabled ${1} && disable $(
3614         eval components="\$$(toupper ${1})_COMPONENTS"
3615         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3616     )
3617 }
3618
3619 map 'disable_components $v' $LIBRARY_LIST
3620
3621 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3622 set >> $logfile
3623
3624 test -n "$valgrind" && toolchain="valgrind-memcheck"
3625
3626 enabled ossfuzz && {
3627     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3628     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3629 }
3630
3631 case "$toolchain" in
3632     *-asan)
3633         cc_default="${toolchain%-asan}"
3634         add_cflags  -fsanitize=address
3635         add_ldflags -fsanitize=address
3636     ;;
3637     *-msan)
3638         cc_default="${toolchain%-msan}"
3639         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3640         add_ldflags -fsanitize=memory
3641     ;;
3642     *-tsan)
3643         cc_default="${toolchain%-tsan}"
3644         add_cflags  -fsanitize=thread -fPIE
3645         add_ldflags -fsanitize=thread -pie
3646         case "$toolchain" in
3647             gcc-tsan)
3648                 add_cflags  -fPIC
3649                 add_ldflags -fPIC
3650                 ;;
3651         esac
3652     ;;
3653     *-usan)
3654         cc_default="${toolchain%-usan}"
3655         add_cflags  -fsanitize=undefined
3656         add_ldflags -fsanitize=undefined
3657     ;;
3658     valgrind-*)
3659         target_exec_default="valgrind"
3660         case "$toolchain" in
3661             valgrind-massif)
3662                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3663                 ;;
3664             valgrind-memcheck)
3665                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3666                 ;;
3667         esac
3668     ;;
3669     msvc)
3670         # Check whether the current MSVC version needs the C99 converter.
3671         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3672         # support enough of C99 to build ffmpeg. Default to the new
3673         # behaviour if the regexp was unable to match anything, since this
3674         # successfully parses the version number of existing supported
3675         # versions that require the converter (MSVC 2010 and 2012).
3676         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3677         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3678             cc_default="cl"
3679             cxx_default="cl"
3680         else
3681             cc_default="c99wrap cl"
3682             cxx_default="c99wrap cl"
3683         fi
3684         ld_default="$source_path/compat/windows/mslink"
3685         nm_default="dumpbin -symbols"
3686         ar_default="lib"
3687         case "$arch" in
3688         arm*)
3689             as_default="armasm"
3690             ;;
3691         esac
3692         target_os_default="win32"
3693         # Use a relative path for TMPDIR. This makes sure all the
3694         # ffconf temp files are written with a relative path, avoiding
3695         # issues with msys/win32 path conversion for MSVC parameters
3696         # such as -Fo<file> or -out:<file>.
3697         TMPDIR=.
3698     ;;
3699     icl)
3700         cc_default="icl"
3701         ld_default="xilink"
3702         nm_default="dumpbin -symbols"
3703         ar_default="xilib"
3704         target_os_default="win32"
3705         TMPDIR=.
3706     ;;
3707     gcov)
3708         add_cflags  -fprofile-arcs -ftest-coverage
3709         add_ldflags -fprofile-arcs -ftest-coverage
3710     ;;
3711     llvm-cov)
3712         add_cflags -fprofile-arcs -ftest-coverage
3713         add_ldflags --coverage
3714     ;;
3715     hardened)
3716         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3717         add_cflags   -fno-strict-overflow -fstack-protector-all
3718         add_ldflags  -Wl,-z,relro -Wl,-z,now
3719         add_cflags   -fPIE
3720         add_ldexeflags -fPIE -pie
3721     ;;
3722     ?*)
3723         die "Unknown toolchain $toolchain"
3724     ;;
3725 esac
3726
3727 test -n "$cross_prefix" && enable cross_compile
3728
3729 if enabled cross_compile; then
3730     test -n "$arch" && test -n "$target_os" ||
3731         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3732 fi
3733
3734 ar_default="${cross_prefix}${ar_default}"
3735 cc_default="${cross_prefix}${cc_default}"
3736 cxx_default="${cross_prefix}${cxx_default}"
3737 nm_default="${cross_prefix}${nm_default}"
3738 pkg_config_default="${cross_prefix}${pkg_config_default}"
3739 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3740     ranlib_default="${cross_prefix}${ranlib_default} -D"
3741 else
3742     ranlib_default="${cross_prefix}${ranlib_default}"
3743 fi
3744 strip_default="${cross_prefix}${strip_default}"
3745 windres_default="${cross_prefix}${windres_default}"
3746
3747 sysinclude_default="${sysroot}/usr/include"
3748
3749 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3750     target_exec target_os x86asmexe nvcc
3751 enabled cross_compile || host_cc_default=$cc
3752 set_default host_cc
3753
3754 pkg_config_fail_message=""
3755 if ! $pkg_config --version >/dev/null 2>&1; then
3756     warn "$pkg_config not found, library detection may fail."
3757     pkg_config=false
3758 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3759     pkg_config_fail_message="
3760 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3761 fi
3762
3763 if test $doxygen != $doxygen_default && \
3764   ! $doxygen --version >/dev/null 2>&1; then
3765     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3766 fi
3767
3768 exesuf() {
3769     case $1 in
3770         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3771     esac
3772 }
3773
3774 EXESUF=$(exesuf $target_os)
3775 HOSTEXESUF=$(exesuf $host_os)
3776
3777 # set temporary file name
3778 : ${TMPDIR:=$TEMPDIR}
3779 : ${TMPDIR:=$TMP}
3780 : ${TMPDIR:=/tmp}
3781
3782 if [ -n "$tempprefix" ] ; then
3783     mktemp(){
3784         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3785         echo "$tmpname"
3786         mkdir "$tmpname"
3787     }
3788 elif ! check_cmd mktemp -u XXXXXX; then
3789     # simple replacement for missing mktemp
3790     # NOT SAFE FOR GENERAL USE
3791     mktemp(){
3792         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3793         echo "$tmpname"
3794         mkdir "$tmpname"
3795     }
3796 fi
3797
3798 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3799     die "Unable to create temporary directory in $TMPDIR."
3800
3801 tmpfile(){
3802     tmp="${FFTMPDIR}/test"$2
3803     (set -C; exec > $tmp) 2> /dev/null ||
3804         die "Unable to create temporary file in $FFTMPDIR."
3805     eval $1=$tmp
3806 }
3807
3808 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3809 trap 'exit 2' INT
3810
3811 tmpfile TMPASM .asm
3812 tmpfile TMPC   .c
3813 tmpfile TMPCPP .cpp
3814 tmpfile TMPE   $EXESUF
3815 tmpfile TMPH   .h
3816 tmpfile TMPM   .m
3817 tmpfile TMPO   .o
3818 tmpfile TMPS   .S
3819 tmpfile TMPSH  .sh
3820 tmpfile TMPV   .ver
3821
3822 unset -f mktemp
3823
3824 chmod +x $TMPE
3825
3826 # make sure we can execute files in $TMPDIR
3827 cat > $TMPSH 2>> $logfile <<EOF
3828 #! /bin/sh
3829 EOF
3830 chmod +x $TMPSH >> $logfile 2>&1
3831 if ! $TMPSH >> $logfile 2>&1; then
3832     cat <<EOF
3833 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3834 variable to another directory and make sure that it is not mounted noexec.
3835 EOF
3836     die "Sanity test failed."
3837 fi
3838
3839 armasm_flags(){
3840     for flag; do
3841         case $flag in
3842             # Filter out MSVC cl.exe options from cflags that shouldn't
3843             # be passed to gas-preprocessor
3844             -M[TD]*)                                            ;;
3845             *)                  echo $flag                      ;;
3846         esac
3847    done
3848 }
3849
3850 ccc_flags(){
3851     for flag; do
3852         case $flag in
3853             -std=c99)           echo -c99                       ;;
3854             -mcpu=*)            echo -arch ${flag#*=}           ;;
3855             -mieee)             echo -ieee                      ;;
3856             -O*|-fast)          echo $flag                      ;;
3857             -fno-math-errno)    echo -assume nomath_errno       ;;
3858             -g)                 echo -g3                        ;;
3859             -Wall)              echo -msg_enable level2         ;;
3860             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3861             -Wl,*)              echo $flag                      ;;
3862             -f*|-W*)                                            ;;
3863             *)                  echo $flag                      ;;
3864         esac
3865    done
3866 }
3867
3868 cparser_flags(){
3869     for flag; do
3870         case $flag in
3871             -Wno-switch)             echo -Wno-switch-enum ;;
3872             -Wno-format-zero-length) ;;
3873             -Wdisabled-optimization) ;;
3874             -Wno-pointer-sign)       echo -Wno-other ;;
3875             *)                       echo $flag ;;
3876         esac
3877     done
3878 }
3879
3880 msvc_common_flags(){
3881     for flag; do
3882         case $flag in
3883             # In addition to specifying certain flags under the compiler
3884             # specific filters, they must be specified here as well or else the
3885             # generic catch all at the bottom will print the original flag.
3886             -Wall)                ;;
3887             -Wextra)              ;;
3888             -std=c99)             ;;
3889             # Common flags
3890             -fomit-frame-pointer) ;;
3891             -g)                   echo -Z7 ;;
3892             -fno-math-errno)      ;;
3893             -fno-common)          ;;
3894             -fno-signed-zeros)    ;;
3895             -fPIC)                ;;
3896             -mthumb)              ;;
3897             -march=*)             ;;
3898             -lz)                  echo zlib.lib ;;
3899             -lx264)               echo libx264.lib ;;
3900             -lstdc++)             ;;
3901             -l*)                  echo ${flag#-l}.lib ;;
3902             -LARGEADDRESSAWARE)   echo $flag ;;
3903             -L*)                  echo -libpath:${flag#-L} ;;
3904             *)                    echo $flag ;;
3905         esac
3906     done
3907 }
3908
3909 msvc_flags(){
3910     msvc_common_flags "$@"
3911     for flag; do
3912         case $flag in
3913             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3914                                        -wd4554 ;;
3915             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3916                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3917                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3918                                        -wd4307 \
3919                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3920         esac
3921     done
3922 }
3923
3924 icl_flags(){
3925     msvc_common_flags "$@"
3926     for flag; do
3927         case $flag in
3928             # Despite what Intel's documentation says -Wall, which is supported
3929             # on Windows, does enable remarks so disable them here.
3930             -Wall)                echo $flag -Qdiag-disable:remark ;;
3931             -std=c99)             echo -Qstd=c99 ;;
3932             -flto)                echo -ipo ;;
3933         esac
3934     done
3935 }
3936
3937 icc_flags(){
3938     for flag; do
3939         case $flag in
3940             -flto)                echo -ipo ;;
3941             *)                    echo $flag ;;
3942         esac
3943     done
3944 }
3945
3946 pgi_flags(){
3947     for flag; do
3948         case $flag in
3949             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3950             -fomit-frame-pointer) echo -Mnoframe ;;
3951             -g)                   echo -gopt ;;
3952             *)                    echo $flag ;;
3953         esac
3954     done
3955 }
3956
3957 suncc_flags(){
3958     for flag; do
3959         case $flag in
3960             -march=*|-mcpu=*)
3961                 case "${flag#*=}" in
3962                     native)                   echo -xtarget=native       ;;
3963                     v9|niagara)               echo -xarch=sparc          ;;
3964                     ultrasparc)               echo -xarch=sparcvis       ;;
3965                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3966                     i586|pentium)             echo -xchip=pentium        ;;
3967                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3968                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3969                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3970                     pentium4*)          echo -xtarget=pentium4           ;;
3971                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3972                     *-sse3)             echo -xarch=sse3                 ;;
3973                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3974                     bonnell)                   echo -xarch=ssse3         ;;
3975                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3976                     westmere)                  echo -xtarget=westmere    ;;
3977                     silvermont)                echo -xarch=sse4_2        ;;
3978                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3979                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3980                                                echo -xarch=avx           ;;
3981                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3982                     btver1)                    echo -xarch=amdsse4a      ;;
3983                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3984                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3985                     k8|opteron|athlon64|athlon-fx)
3986                                                echo -xarch=sse2a         ;;
3987                     athlon*)                   echo -xarch=pentium_proa  ;;
3988                 esac
3989                 ;;
3990             -std=c99)             echo -xc99              ;;
3991             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3992             -fPIC)                echo -KPIC -xcode=pic32 ;;
3993             -W*,*)                echo $flag              ;;
3994             -f*-*|-W*|-mimpure-text)                      ;;
3995             -shared)              echo -G                 ;;
3996             *)                    echo $flag              ;;
3997         esac
3998     done
3999 }
4000
4001 tms470_flags(){
4002     for flag; do
4003         case $flag in
4004             -march=*|-mcpu=*)
4005                 case "${flag#*=}" in
4006                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4007                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4008                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4009                     armv6*|arm11*)          echo -mv=6   ;;
4010                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4011                                             echo -mv=5e  ;;
4012                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4013                 esac
4014                 ;;
4015             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4016             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4017             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4018             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4019             -msoft-float)   echo --float_support=vfplib       ;;
4020             -O[0-3]|-mf=*)  echo $flag                        ;;
4021             -g)             echo -g -mn                       ;;
4022             -pds=*)         echo $flag                        ;;
4023             -D*|-I*)        echo $flag                        ;;
4024             --gcc|--abi=*)  echo $flag                        ;;
4025             -me)            echo $flag                        ;;
4026         esac
4027     done
4028 }
4029
4030 probe_cc(){
4031     pfx=$1
4032     _cc=$2
4033     first=$3
4034
4035     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4036     unset _ld_o _ldflags _ld_lib _ld_path
4037     unset _depflags _DEPCMD _DEPFLAGS
4038     _flags_filter=echo
4039
4040     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4041         true # no-op to avoid reading stdin in following checks
4042     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4043         _type=llvm_gcc
4044         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4045         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4046         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4047         _cflags_speed='-O3'
4048         _cflags_size='-Os'
4049     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4050         _type=gcc
4051         gcc_version=$($_cc --version | head -n1)
4052         gcc_basever=$($_cc -dumpversion)
4053         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4054         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4055         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4056         case $gcc_basever in
4057             2) ;;
4058             2.*) ;;
4059             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4060         esac
4061         if [ "$first" = true ]; then
4062             case $gcc_basever in
4063                 4.2*)
4064                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4065             esac
4066         fi
4067         _cflags_speed='-O3'
4068         _cflags_size='-Os'
4069     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4070         _type=icc
4071         _ident=$($_cc --version | head -n1)
4072         _depflags='-MMD'
4073         _cflags_speed='-O3'
4074         _cflags_size='-Os'
4075         _cflags_noopt='-O1'
4076         _flags_filter=icc_flags
4077     elif $_cc -v 2>&1 | grep -q xlc; then
4078         _type=xlc
4079         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4080         _cflags_speed='-O5'
4081         _cflags_size='-O5 -qcompact'
4082     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4083         _type=ccc
4084         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4085         _DEPFLAGS='-M'
4086         _cflags_speed='-fast'
4087         _cflags_size='-O1'
4088         _flags_filter=ccc_flags
4089     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4090         test -d "$sysroot" || die "No valid sysroot specified."
4091         _type=armcc
4092         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4093         armcc_conf="$PWD/armcc.conf"
4094         $_cc --arm_linux_configure                 \
4095              --arm_linux_config_file="$armcc_conf" \
4096              --configure_sysroot="$sysroot"        \
4097              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4098              die "Error creating armcc configuration file."
4099         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4100         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4101         as_default="${cross_prefix}gcc"
4102         _depflags='-MMD'
4103         _cflags_speed='-O3'
4104         _cflags_size='-Os'
4105     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4106         _type=tms470
4107         _ident=$($_cc -version | head -n1 | tr -s ' ')
4108         _flags='--gcc --abi=eabi -me'
4109         _cc_e='-ppl -fe=$@'
4110         _cc_o='-fe=$@'
4111         _depflags='-ppa -ppd=$(@:.o=.d)'
4112         _cflags_speed='-O3 -mf=5'
4113         _cflags_size='-O3 -mf=2'
4114         _flags_filter=tms470_flags
4115     elif $_cc -v 2>&1 | grep -q clang; then
4116         _type=clang
4117         _ident=$($_cc --version 2>/dev/null | head -n1)
4118         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4119         _cflags_speed='-O3'
4120         _cflags_size='-Oz'
4121     elif $_cc -V 2>&1 | grep -q Sun; then
4122         _type=suncc
4123         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4124         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4125         _DEPFLAGS='-xM1 -xc99'
4126         _ldflags='-std=c99'
4127         _cflags_speed='-O5'
4128         _cflags_size='-O5 -xspace'
4129         _flags_filter=suncc_flags
4130     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4131         _type=pathscale
4132         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4133         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4134         _cflags_speed='-O2'
4135         _cflags_size='-Os'
4136         _flags_filter='filter_out -Wdisabled-optimization'
4137     elif $_cc -v 2>&1 | grep -q Open64; then
4138         _type=open64
4139         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4140         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4141         _cflags_speed='-O2'
4142         _cflags_size='-Os'
4143         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4144     elif $_cc -V 2>&1 | grep -q Portland; then
4145         _type=pgi
4146         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4147         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4148         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4149         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4150         _cflags_noopt="-O"
4151         _flags_filter=pgi_flags
4152     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4153         _type=armasm
4154         _ident=$($_cc | head -n1)
4155         # 4509: "This form of conditional instruction is deprecated"
4156         _flags="-nologo -ignore 4509"
4157         _flags_filter=armasm_flags
4158     elif $_cc 2>&1 | grep -q Intel; then
4159         _type=icl
4160         _ident=$($_cc 2>&1 | head -n1)
4161         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4162         # Not only is O3 broken on 13.x+ but it is slower on all previous
4163         # versions (tested) as well.
4164         _cflags_speed="-O2"
4165         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4166         if $_cc 2>&1 | grep -q Linker; then
4167             _ld_o='-out:$@'
4168         else
4169             _ld_o='-Fe$@'
4170         fi
4171         _cc_o='-Fo$@'
4172         _cc_e='-P'
4173         _flags_filter=icl_flags
4174         _ld_lib='lib%.a'
4175         _ld_path='-libpath:'
4176         # -Qdiag-error to make icl error when seeing certain unknown arguments
4177         _flags='-nologo -Qdiag-error:4044,10157'
4178         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4179         # with MSVC which enables it by default.
4180         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4181         disable stripping
4182     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4183         # lld can emulate multiple different linkers; in ms link.exe mode,
4184         # the -? parameter gives the help output which contains an identifyable
4185         # string, while it gives an error in other modes.
4186         _type=lld-link
4187         # The link.exe mode doesn't have a switch for getting the version,
4188         # but we can force it back to gnu mode and get the version from there.
4189         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4190         _ld_o='-out:$@'
4191         _flags_filter=msvc_flags
4192         _ld_lib='lib%.a'
4193         _ld_path='-libpath:'
4194     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4195         _type=msvc
4196         _ident=$($_cc 2>&1 | head -n1)
4197         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4198         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4199         _cflags_speed="-O2"
4200         _cflags_size="-O1"
4201         _cflags_noopt="-O1"
4202         if $_cc -nologo- 2>&1 | grep -q Linker; then
4203             _ld_o='-out:$@'
4204         else
4205             _ld_o='-Fe$@'
4206         fi
4207         _cc_o='-Fo$@'
4208         _cc_e='-P -Fi$@'
4209         _flags_filter=msvc_flags
4210         _ld_lib='lib%.a'
4211         _ld_path='-libpath:'
4212         _flags='-nologo'
4213         disable stripping
4214     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4215         _type=cparser
4216         _ident=$($_cc --version | head -n1)
4217         _depflags='-MMD'
4218         _cflags_speed='-O4'
4219         _cflags_size='-O2'
4220         _flags_filter=cparser_flags
4221     fi
4222
4223     eval ${pfx}_type=\$_type
4224     eval ${pfx}_ident=\$_ident
4225 }
4226
4227 set_ccvars(){
4228     eval ${1}_C=\${_cc_c-\${${1}_C}}
4229     eval ${1}_E=\${_cc_e-\${${1}_E}}
4230     eval ${1}_O=\${_cc_o-\${${1}_O}}
4231
4232     if [ -n "$_depflags" ]; then
4233         eval ${1}_DEPFLAGS=\$_depflags
4234     else
4235         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4236         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4237         eval DEP${1}FLAGS=\$_flags
4238     fi
4239 }
4240
4241 probe_cc cc "$cc" "true"
4242 cflags_filter=$_flags_filter
4243 cflags_speed=$_cflags_speed
4244 cflags_size=$_cflags_size
4245 cflags_noopt=$_cflags_noopt
4246 add_cflags $_flags $_cflags
4247 cc_ldflags=$_ldflags
4248 set_ccvars CC
4249 set_ccvars CXX
4250
4251 probe_cc hostcc "$host_cc"
4252 host_cflags_filter=$_flags_filter
4253 host_cflags_speed=$_cflags_speed
4254 add_host_cflags  $_flags $_cflags
4255 set_ccvars HOSTCC
4256
4257 test -n "$cc_type" && enable $cc_type ||
4258     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4259
4260 : ${as_default:=$cc}
4261 : ${objcc_default:=$cc}
4262 : ${dep_cc_default:=$cc}
4263 : ${ld_default:=$cc}
4264 : ${host_ld_default:=$host_cc}
4265 set_default ar as objcc dep_cc ld ln_s host_ld windres
4266
4267 probe_cc as "$as"
4268 asflags_filter=$_flags_filter
4269 add_asflags $_flags $_cflags
4270 set_ccvars AS
4271
4272 probe_cc objcc "$objcc"
4273 objcflags_filter=$_flags_filter
4274 add_objcflags $_flags $_cflags
4275 set_ccvars OBJC
4276
4277 probe_cc ld "$ld"
4278 ldflags_filter=$_flags_filter
4279 add_ldflags $_flags $_ldflags
4280 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4281 LD_O=${_ld_o-$LD_O}
4282 LD_LIB=${_ld_lib-$LD_LIB}
4283 LD_PATH=${_ld_path-$LD_PATH}
4284
4285 probe_cc hostld "$host_ld"
4286 host_ldflags_filter=$_flags_filter
4287 add_host_ldflags $_flags $_ldflags
4288 HOSTLD_O=${_ld_o-$HOSTLD_O}
4289
4290 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4291     probe_cc depcc "$dep_cc"
4292     CCDEP=${_DEPCMD:-$DEPCMD}
4293     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4294     DEPCCFLAGS=$_flags
4295 fi
4296
4297 if $ar 2>&1 | grep -q Microsoft; then
4298     arflags="-nologo"
4299     ar_o='-out:$@'
4300 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4301     arflags="rq"
4302     ar_o='$@'
4303 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4304     arflags='-Xany -r -c'
4305     ar_o='$@'
4306 elif $ar 2>&1 | grep -q "\[D\] "; then
4307     arflags="rcD"
4308     ar_o='$@'
4309 else
4310     arflags="rc"
4311     ar_o='$@'
4312 fi
4313
4314 add_cflags $extra_cflags
4315 add_cxxflags $extra_cxxflags
4316 add_objcflags $extra_objcflags
4317 add_asflags $extra_cflags
4318
4319 if test -n "$sysroot"; then
4320     case "$cc_type" in
4321         gcc|llvm_gcc|clang)
4322             add_cppflags --sysroot="$sysroot"
4323             add_ldflags --sysroot="$sysroot"
4324 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4325             add_cppflags -isysroot "$sysroot"
4326             add_ldflags -isysroot "$sysroot"
4327         ;;
4328         tms470)
4329             add_cppflags -I"$sysinclude"
4330             add_ldflags  --sysroot="$sysroot"
4331         ;;
4332     esac
4333 fi
4334
4335 if test "$cpu" = host; then
4336     enabled cross_compile &&
4337         die "--cpu=host makes no sense when cross-compiling."
4338
4339     case "$cc_type" in
4340         gcc|llvm_gcc)
4341             check_native(){
4342                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4343                 sed -n "/cc1.*$1=/{
4344                             s/.*$1=\\([^ ]*\\).*/\\1/
4345                             p
4346                             q
4347                         }" $TMPE
4348             }
4349             cpu=$(check_native -march || check_native -mcpu)
4350         ;;
4351         clang)
4352             check_native(){
4353                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4354                 sed -n "/cc1.*-target-cpu /{
4355                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4356                             p
4357                             q
4358                         }" $TMPE
4359             }
4360             cpu=$(check_native -march)
4361         ;;
4362     esac
4363
4364     test "${cpu:-host}" = host &&
4365         die "--cpu=host not supported with compiler $cc"
4366 fi
4367
4368 # Deal with common $arch aliases
4369 case "$arch" in
4370     aarch64|arm64)
4371         arch="aarch64"
4372     ;;
4373     arm*|iPad*|iPhone*)
4374         arch="arm"
4375     ;;
4376     mips*|IP*)
4377         case "$arch" in
4378         *el)
4379             add_cppflags -EL
4380             add_ldflags -EL
4381         ;;
4382         *eb)
4383             add_cppflags -EB
4384             add_ldflags -EB
4385         ;;
4386         esac
4387         arch="mips"
4388     ;;
4389     parisc*|hppa*)
4390         arch="parisc"
4391     ;;
4392     "Power Macintosh"|ppc*|powerpc*)
4393         arch="ppc"
4394     ;;
4395     s390|s390x)
4396         arch="s390"
4397     ;;
4398     sh4|sh)
4399         arch="sh4"
4400     ;;
4401     sun4*|sparc*)
4402         arch="sparc"
4403     ;;
4404     tilegx|tile-gx)
4405         arch="tilegx"
4406     ;;
4407     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4408         arch="x86"
4409     ;;
4410 esac
4411
4412 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4413 enable $arch
4414
4415 # Add processor-specific flags
4416 if enabled aarch64; then
4417
4418     case $cpu in
4419         armv*)
4420             cpuflags="-march=$cpu"
4421         ;;
4422         *)
4423             cpuflags="-mcpu=$cpu"
4424         ;;
4425     esac
4426
4427 elif enabled alpha; then
4428
4429     cpuflags="-mcpu=$cpu"
4430
4431 elif enabled arm; then
4432
4433     check_arm_arch() {
4434         check_cpp_condition stddef.h \
4435             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4436             $cpuflags
4437     }
4438
4439     probe_arm_arch() {
4440         if   check_arm_arch 4;        then echo armv4
4441         elif check_arm_arch 4T;       then echo armv4t
4442         elif check_arm_arch 5;        then echo armv5
4443         elif check_arm_arch 5E;       then echo armv5e
4444         elif check_arm_arch 5T;       then echo armv5t
4445         elif check_arm_arch 5TE;      then echo armv5te
4446         elif check_arm_arch 5TEJ;     then echo armv5te
4447         elif check_arm_arch 6;        then echo armv6
4448         elif check_arm_arch 6J;       then echo armv6j
4449         elif check_arm_arch 6K;       then echo armv6k
4450         elif check_arm_arch 6Z;       then echo armv6z
4451         elif check_arm_arch 6ZK;      then echo armv6zk
4452         elif check_arm_arch 6T2;      then echo armv6t2
4453         elif check_arm_arch 7;        then echo armv7
4454         elif check_arm_arch 7A  7_A;  then echo armv7-a
4455         elif check_arm_arch 7S;       then echo armv7-a
4456         elif check_arm_arch 7R  7_R;  then echo armv7-r
4457         elif check_arm_arch 7M  7_M;  then echo armv7-m
4458         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4459         elif check_arm_arch 8A  8_A;  then echo armv8-a
4460         fi
4461     }
4462
4463     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4464
4465     case $cpu in
4466         armv*)
4467             cpuflags="-march=$cpu"
4468             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4469         ;;
4470         *)
4471             cpuflags="-mcpu=$cpu"
4472             case $cpu in
4473                 cortex-a*)                               subarch=armv7a  ;;
4474                 cortex-r*)                               subarch=armv7r  ;;
4475                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4476                 arm11*)                                  subarch=armv6   ;;
4477                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4478                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4479                 *)                             subarch=$(probe_arm_arch) ;;
4480             esac
4481         ;;
4482     esac
4483
4484     case "$subarch" in
4485         armv5t*)    enable fast_clz                ;;
4486         armv[6-8]*)
4487             enable fast_clz
4488             disabled fast_unaligned || enable fast_unaligned
4489             ;;
4490     esac
4491
4492 elif enabled avr32; then
4493
4494     case $cpu in
4495         ap7[02]0[0-2])
4496             subarch="avr32_ap"
4497             cpuflags="-mpart=$cpu"
4498         ;;
4499         ap)
4500             subarch="avr32_ap"
4501             cpuflags="-march=$cpu"
4502         ;;
4503         uc3[ab]*)
4504             subarch="avr32_uc"
4505             cpuflags="-mcpu=$cpu"
4506         ;;
4507         uc)
4508             subarch="avr32_uc"
4509             cpuflags="-march=$cpu"
4510         ;;
4511     esac
4512
4513 elif enabled bfin; then
4514
4515     cpuflags="-mcpu=$cpu"
4516
4517 elif enabled mips; then
4518
4519     cpuflags="-march=$cpu"
4520
4521     if [ "$cpu" != "generic" ]; then
4522         disable mips32r2
4523         disable mips32r5
4524         disable mips64r2
4525         disable mips32r6
4526         disable mips64r6
4527         disable loongson2
4528         disable loongson3
4529
4530         case $cpu in
4531             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4532                 enable mips32r2
4533                 disable msa
4534             ;;
4535             p5600|i6400|p6600)
4536                 disable mipsdsp
4537                 disable mipsdspr2
4538             ;;
4539             loongson*)
4540                 enable loongson2
4541                 enable loongson3
4542                 enable local_aligned_8 local_aligned_16 local_aligned_32
4543                 enable simd_align_16
4544                 enable fast_64bit
4545                 enable fast_clz
4546                 enable fast_cmov
4547                 enable fast_unaligned
4548                 disable aligned_stack
4549                 disable mipsfpu
4550                 disable mipsdsp
4551                 disable mipsdspr2
4552                 case $cpu in
4553                     loongson3*)
4554                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4555                     ;;
4556                     loongson2e)
4557                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4558                     ;;
4559                     loongson2f)
4560                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4561                     ;;
4562                 esac
4563             ;;
4564             *)
4565                 # Unknown CPU. Disable everything.
4566                 warn "unknown CPU. Disabling all MIPS optimizations."
4567                 disable mipsfpu
4568                 disable mipsdsp
4569                 disable mipsdspr2
4570                 disable msa
4571                 disable mmi
4572             ;;
4573         esac
4574
4575         case $cpu in
4576             24kc)
4577                 disable mipsfpu
4578                 disable mipsdsp
4579                 disable mipsdspr2
4580             ;;
4581             24kf*)
4582                 disable mipsdsp
4583                 disable mipsdspr2
4584             ;;
4585             24kec|34kc|1004kc)
4586                 disable mipsfpu
4587                 disable mipsdspr2
4588             ;;
4589             24kef*|34kf*|1004kf*)
4590                 disable mipsdspr2
4591             ;;
4592             74kc)
4593                 disable mipsfpu
4594             ;;
4595             p5600)
4596                 enable mips32r5
4597                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4598             ;;
4599             i6400)
4600                 enable mips64r6
4601                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4602             ;;
4603             p6600)
4604                 enable mips64r6
4605                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4606             ;;
4607         esac
4608     else
4609         # We do not disable anything. Is up to the user to disable the unwanted features.
4610         warn 'generic cpu selected'
4611     fi
4612
4613 elif enabled ppc; then
4614
4615     disable ldbrx
4616
4617     case $(tolower $cpu) in
4618         601|ppc601|powerpc601)
4619             cpuflags="-mcpu=601"
4620             disable altivec
4621         ;;
4622         603*|ppc603*|powerpc603*)
4623             cpuflags="-mcpu=603"
4624             disable altivec
4625         ;;
4626         604*|ppc604*|powerpc604*)
4627             cpuflags="-mcpu=604"
4628             disable altivec
4629         ;;
4630         g3|75*|ppc75*|powerpc75*)
4631             cpuflags="-mcpu=750"
4632             disable altivec
4633         ;;
4634         g4|745*|ppc745*|powerpc745*)
4635             cpuflags="-mcpu=7450"
4636             disable vsx
4637         ;;
4638         74*|ppc74*|powerpc74*)
4639             cpuflags="-mcpu=7400"
4640             disable vsx
4641         ;;
4642         g5|970|ppc970|powerpc970)
4643             cpuflags="-mcpu=970"
4644             disable vsx
4645         ;;
4646         power[3-6]*)
4647             cpuflags="-mcpu=$cpu"
4648             disable vsx
4649         ;;
4650         power[7-8]*)
4651             cpuflags="-mcpu=$cpu"
4652         ;;
4653         cell)
4654             cpuflags="-mcpu=cell"
4655             enable ldbrx
4656             disable vsx
4657         ;;
4658         e500mc)
4659             cpuflags="-mcpu=e500mc"
4660             disable altivec
4661         ;;
4662         e500v2)
4663             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4664             disable altivec
4665             disable dcbzl
4666         ;;
4667         e500)
4668             cpuflags="-mcpu=8540 -mhard-float"
4669             disable altivec
4670             disable dcbzl
4671         ;;
4672     esac
4673
4674 elif enabled sparc; then
4675
4676     case $cpu in
4677         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4678             cpuflags="-mcpu=$cpu"
4679         ;;
4680         ultrasparc*|niagara[234])
4681             cpuflags="-mcpu=$cpu"
4682         ;;
4683     esac
4684
4685 elif enabled x86; then
4686
4687     case $cpu in
4688         i[345]86|pentium)
4689             cpuflags="-march=$cpu"
4690             disable i686
4691             disable mmx
4692         ;;
4693         # targets that do NOT support nopl and conditional mov (cmov)
4694         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4695             cpuflags="-march=$cpu"
4696             disable i686
4697         ;;
4698         # targets that do support nopl and conditional mov (cmov)
4699         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4700         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4701         |amdfam10|barcelona|b[dt]ver*|znver*)
4702             cpuflags="-march=$cpu"
4703             enable i686
4704             enable fast_cmov
4705         ;;
4706         # targets that do support conditional mov but on which it's slow
4707         pentium4|pentium4m|prescott|nocona)
4708             cpuflags="-march=$cpu"
4709             enable i686
4710             disable fast_cmov
4711         ;;
4712     esac
4713
4714 fi
4715
4716 if [ "$cpu" != generic ]; then
4717     add_cflags  $cpuflags
4718     add_asflags $cpuflags
4719     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4720 fi
4721
4722 # compiler sanity check
4723 check_exec <<EOF
4724 int main(void){ return 0; }
4725 EOF
4726 if test "$?" != 0; then
4727     echo "$cc is unable to create an executable file."
4728     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4729         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4730         echo "Only do this if you know what cross compiling means."
4731     fi
4732     die "C compiler test failed."
4733 fi
4734
4735 add_cppflags -D_ISOC99_SOURCE
4736 add_cxxflags -D__STDC_CONSTANT_MACROS
4737 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4738
4739 # some compilers silently accept -std=c11, so we also need to check that the
4740 # version macro is defined properly
4741 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4742     add_cflags -std=c11
4743 else
4744     check_cflags -std=c99
4745 fi
4746
4747 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4748 #include <stdlib.h>
4749 EOF
4750 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4751 #include <stdlib.h>
4752 EOF
4753
4754 add_host_cppflags -D_ISOC99_SOURCE
4755 check_host_cflags -std=c99
4756 check_host_cflags -Wall
4757 check_host_cflags $host_cflags_speed
4758
4759 check_64bit(){
4760     arch32=$1
4761     arch64=$2
4762     expr=$3
4763     check_code cc "" "int test[2*($expr) - 1]" &&
4764         subarch=$arch64 || subarch=$arch32
4765 }
4766
4767 case "$arch" in
4768     aarch64|alpha|ia64)
4769         spic=$shared
4770     ;;
4771     mips)
4772         check_64bit mips mips64 '_MIPS_SIM > 1'
4773         spic=$shared
4774     ;;
4775     parisc)
4776         check_64bit parisc parisc64 'sizeof(void *) > 4'
4777         spic=$shared
4778     ;;
4779     ppc)
4780         check_64bit ppc ppc64 'sizeof(void *) > 4'
4781         spic=$shared
4782     ;;
4783     s390)
4784         check_64bit s390 s390x 'sizeof(void *) > 4'
4785         spic=$shared
4786     ;;
4787     sparc)
4788         check_64bit sparc sparc64 'sizeof(void *) > 4'
4789         spic=$shared
4790     ;;
4791     x86)
4792         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4793         # Treat x32 as x64 for now. Note it also needs spic=$shared
4794         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4795             subarch=x86_64
4796         if test "$subarch" = "x86_64"; then
4797             spic=$shared
4798         fi
4799     ;;
4800     ppc)
4801         check_cc <<EOF && subarch="ppc64"
4802         int test[(int)sizeof(char*) - 7];
4803 EOF
4804     ;;
4805 esac
4806
4807 enable $subarch
4808 enabled spic && enable_weak pic
4809
4810 enabled x86_64 && objformat=elf64 || objformat="elf32"
4811
4812 # OS specific
4813 case $target_os in
4814     aix)
4815         SHFLAGS=-shared
4816         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4817         enabled shared && add_ldflags -Wl,-brtl
4818         ;;
4819     android)
4820         disable symver
4821         enable section_data_rel_ro
4822         SLIB_INSTALL_NAME='$(SLIBNAME)'
4823         SLIB_INSTALL_LINKS=
4824         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4825         ;;
4826     haiku)
4827         prefix_default="/boot/common"
4828         network_extralibs="-lnetwork"
4829         host_extralibs=
4830         ;;
4831     sunos)
4832         SHFLAGS='-shared -Wl,-h,$$(@F)'
4833         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4834         network_extralibs="-lsocket -lnsl"
4835         add_cppflags -D__EXTENSIONS__
4836         # When using suncc to build, the Solaris linker will mark
4837         # an executable with each instruction set encountered by
4838         # the Solaris assembler.  As our libraries contain their own
4839         # guards for processor-specific code, instead suppress
4840         # generation of the HWCAPS ELF section on Solaris x86 only.
4841         enabled_all suncc x86 &&
4842             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4843             add_ldflags -Wl,-M,mapfile
4844         nm_default='nm -P -g'
4845         version_script='-M'
4846         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4847         ;;
4848     netbsd)
4849         disable symver
4850         oss_indev_extralibs="-lossaudio"
4851         oss_outdev_extralibs="-lossaudio"
4852         enabled gcc || check_ldflags -Wl,-zmuldefs
4853         ;;
4854     openbsd|bitrig)
4855         disable symver
4856         SHFLAGS='-shared'
4857         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4858         SLIB_INSTALL_LINKS=
4859         oss_indev_extralibs="-lossaudio"
4860         oss_outdev_extralibs="-lossaudio"
4861         ;;
4862     dragonfly)
4863         disable symver
4864         ;;
4865     freebsd)
4866         ;;
4867     bsd/os)
4868         add_extralibs -lpoll -lgnugetopt
4869         strip="strip -d"
4870         ;;
4871     darwin)
4872         enabled ppc && add_asflags -force_cpusubtype_ALL
4873         install_name_dir_default='$(SHLIBDIR)'
4874         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4875         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4876         strip="${strip} -x"
4877         add_ldflags -Wl,-dynamic,-search_paths_first
4878         SLIBSUF=".dylib"
4879         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4880         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4881         objformat="macho"
4882         enabled x86_64 && objformat="macho64" || objformat="macho32"
4883         enabled_any pic shared x86_64 ||
4884             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4885         check_header dispatch/dispatch.h &&
4886             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4887         version_script='-exported_symbols_list'
4888         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4889         ;;
4890     msys*)
4891         die "Native MSYS builds are discouraged, please use the MINGW environment."
4892         ;;
4893     mingw32*|mingw64*)
4894         if test $target_os = "mingw32ce"; then
4895             disable network
4896         else
4897             target_os=mingw32
4898         fi
4899         LIBTARGET=i386
4900         if enabled x86_64; then
4901             LIBTARGET="i386:x86-64"
4902         elif enabled arm; then
4903             LIBTARGET=arm-wince
4904         fi
4905         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4906         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4907         shlibdir_default="$bindir_default"
4908         SLIBPREF=""
4909         SLIBSUF=".dll"
4910         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4911         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4912         dlltool="${cross_prefix}dlltool"
4913         if check_cmd lib.exe -list; then
4914             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4915             if enabled x86_64; then
4916                 LIBTARGET=x64
4917             fi
4918         elif check_cmd $dlltool --version; then
4919             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4920         fi
4921         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4922         SLIB_INSTALL_LINKS=
4923         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4924         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4925         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4926         enabled x86_64 && objformat="win64" || objformat="win32"
4927         ranlib=:
4928         enable dos_paths
4929         check_ldflags -Wl,--nxcompat,--dynamicbase
4930         # Lets work around some stupidity in binutils.
4931         # ld will strip relocations from executables even though we need them
4932         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4933         # however ld then forgets what the entry point should be (oops) so we
4934         # have to manually (re)set it.
4935         if enabled x86_32; then
4936             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4937         elif enabled x86_64; then
4938             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4939             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4940             # Set image base >4GB for extra entropy with HEASLR
4941             add_ldexeflags -Wl,--image-base,0x140000000
4942             append SHFLAGS -Wl,--image-base,0x180000000
4943         fi
4944         ;;
4945     win32|win64)
4946         disable symver
4947         if enabled shared; then
4948             # Link to the import library instead of the normal static library
4949             # for shared libs.
4950             LD_LIB='%.lib'
4951             # Cannot build both shared and static libs with MSVC or icl.
4952             disable static
4953         fi
4954         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4955         shlibdir_default="$bindir_default"
4956         SLIBPREF=""
4957         SLIBSUF=".dll"
4958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4960         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4961         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4962         SLIB_INSTALL_LINKS=
4963         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4964         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4965         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4966         enabled x86_64 && objformat="win64" || objformat="win32"
4967         ranlib=:
4968         enable dos_paths
4969         ;;
4970     cygwin*)
4971         target_os=cygwin
4972         shlibdir_default="$bindir_default"
4973         SLIBPREF="cyg"
4974         SLIBSUF=".dll"
4975         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4976         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4977         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4978         SLIB_INSTALL_LINKS=
4979         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4980         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4981         enabled x86_64 && objformat="win64" || objformat="win32"
4982         enable dos_paths
4983         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4984         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4985         ;;
4986     *-dos|freedos|opendos)
4987         network_extralibs="-lsocket"
4988         objformat="coff"
4989         enable dos_paths
4990         add_cppflags -U__STRICT_ANSI__
4991         ;;
4992     linux)
4993         enable dv1394
4994         enable section_data_rel_ro
4995         ;;
4996     irix*)
4997         target_os=irix
4998         ranlib="echo ignoring ranlib"
4999         ;;
5000     os/2*)
5001         strip="lxlite -CS"
5002         objformat="aout"
5003         add_cppflags -D_GNU_SOURCE
5004         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5005         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5006         LIBSUF="_s.a"
5007         SLIBPREF=""
5008         SLIBSUF=".dll"
5009         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5010         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5011         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5012             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5013             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5014             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5015             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5016         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5017             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5018         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5019         SLIB_INSTALL_LINKS=
5020         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5021         enable dos_paths
5022         enable_weak os2threads
5023         ;;
5024     gnu/kfreebsd)
5025         add_cppflags -D_BSD_SOURCE
5026         ;;
5027     gnu)
5028         ;;
5029     qnx)
5030         add_cppflags -D_QNX_SOURCE
5031         network_extralibs="-lsocket"
5032         ;;
5033     symbian)
5034         SLIBSUF=".dll"
5035         enable dos_paths
5036         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5037         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5038         add_ldflags -Wl,--target1-abs,--no-undefined \
5039                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5040                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5041         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5042                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5043                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5044         ;;
5045     osf1)
5046         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5047         ;;
5048     minix)
5049         ;;
5050     none)
5051         ;;
5052     *)
5053         die "Unknown OS '$target_os'."
5054         ;;
5055 esac
5056
5057 # test if creating links works
5058 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5059 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5060 mkdir "$link_dest"
5061 $ln_s "$link_dest" "$link_name"
5062 touch "$link_dest/test_file"
5063 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5064     # create link to source path
5065     [ -e src ] && rm src
5066     $ln_s "$source_path" src
5067     source_link=src
5068 else
5069     # creating directory links doesn't work
5070     # fall back to using the full source path
5071     source_link="$source_path"
5072 fi
5073 # cleanup
5074 rm -r "$link_dest"
5075 rm -r "$link_name"
5076
5077 # determine libc flavour
5078
5079 probe_libc(){
5080     pfx=$1
5081     pfx_no_=${pfx%_}
5082     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5083     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5084         eval ${pfx}libc_type=uclibc
5085         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5086     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5087         eval ${pfx}libc_type=glibc
5088         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5089     # MinGW headers can be installed on Cygwin, so check for newlib first.
5090     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5091         eval ${pfx}libc_type=newlib
5092         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5093     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5094     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5095         eval ${pfx}libc_type=mingw64
5096         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5097             add_compat msvcrt/snprintf.o
5098             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5099         fi
5100         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5101         eval test \$${pfx_no_}cc_type = "gcc" &&
5102             add_${pfx}cppflags -D__printf__=__gnu_printf__
5103     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5104          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5105         eval ${pfx}libc_type=mingw32
5106         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5107             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5108             die "ERROR: MinGW32 runtime version must be >= 3.15."
5109         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5110         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5111             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5112         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5113             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5114         eval test \$${pfx_no_}cc_type = "gcc" &&
5115             add_${pfx}cppflags -D__printf__=__gnu_printf__
5116     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5117         eval ${pfx}libc_type=msvcrt
5118         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5119             if [ "$pfx" = host_ ]; then
5120                 add_host_cppflags -Dsnprintf=_snprintf
5121             else
5122                 add_compat strtod.o strtod=avpriv_strtod
5123                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5124                                              _snprintf=avpriv_snprintf  \
5125                                              vsnprintf=avpriv_vsnprintf
5126             fi
5127         fi
5128         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5129         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5130         # 0x601 by default unless something else is set by the user.
5131         # This can easily lead to us detecting functions only present
5132         # in such new versions and producing binaries requiring windows 7.0.
5133         # Therefore explicitly set the default to XP unless the user has
5134         # set something else on the command line.
5135         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5136         # family. For these cases, configure is free to use any functions
5137         # found in the SDK headers by default. (Alternatively, we could force
5138         # _WIN32_WINNT to 0x0602 in that case.)
5139         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5140             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5141 #ifdef WINAPI_FAMILY
5142 #include <winapifamily.h>
5143 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5144 #error not desktop
5145 #endif
5146 #endif
5147 EOF
5148         if [ "$pfx" = "" ]; then
5149             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5150             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5151         fi
5152     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5153         eval ${pfx}libc_type=klibc
5154     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5155         eval ${pfx}libc_type=bionic
5156     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5157         eval ${pfx}libc_type=solaris
5158         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5159     fi
5160     check_${pfx}cc <<EOF
5161 #include <time.h>
5162 void *v = localtime_r;
5163 EOF
5164 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5165 #include <time.h>
5166 void *v = localtime_r;
5167 EOF
5168
5169 }
5170
5171 probe_libc
5172 test -n "$libc_type" && enable libc_$libc_type
5173 probe_libc host_
5174 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5175
5176 case $libc_type in
5177     bionic)
5178         add_compat strtod.o strtod=avpriv_strtod
5179         ;;
5180 esac
5181
5182 # hacks for compiler/libc/os combinations
5183
5184 if enabled_all tms470 libc_glibc; then
5185     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5186     add_cppflags -D__USER_LABEL_PREFIX__=
5187     add_cppflags -D__builtin_memset=memset
5188     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5189     add_cflags   -pds=48    # incompatible redefinition of macro
5190 fi
5191
5192 if enabled_all ccc libc_glibc; then
5193     add_ldflags -Wl,-z,now  # calls to libots crash without this
5194 fi
5195
5196 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5197     add_cppflags '-I\$(SRC_PATH)/compat/float'
5198
5199 esc(){
5200     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5201 }
5202
5203 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5204
5205 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5206
5207 set_default libdir
5208 : ${shlibdir_default:="$libdir"}
5209 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5210
5211 set_default $PATHS_LIST
5212 set_default nm
5213
5214 # we need to build at least one lib type
5215 if ! enabled_any static shared; then
5216     cat <<EOF
5217 At least one library type must be built.
5218 Specify --enable-static to build the static libraries or --enable-shared to
5219 build the shared libraries as well. To only build the shared libraries specify
5220 --disable-static in addition to --enable-shared.
5221 EOF
5222     exit 1
5223 fi
5224
5225 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5226
5227 enable_weak_pic() {
5228     disabled pic && return
5229     enable pic
5230     add_cppflags -DPIC
5231     case "$target_os" in
5232     mingw*|cygwin*)
5233         ;;
5234     *)
5235         add_cflags -fPIC
5236         ;;
5237     esac
5238     add_asflags  -fPIC
5239 }
5240
5241 enabled pic && enable_weak_pic
5242
5243 check_cc <<EOF || die "Symbol mangling check failed."
5244 int ff_extern;
5245 EOF
5246 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5247 extern_prefix=${sym%%ff_extern*}
5248
5249 check_cc <<EOF && enable_weak inline_asm
5250 void foo(void) { __asm__ volatile ("" ::); }
5251 EOF
5252
5253 _restrict=
5254 for restrict_keyword in restrict __restrict__ __restrict; do
5255     check_cc <<EOF && _restrict=$restrict_keyword && break
5256 void foo(char * $restrict_keyword p);
5257 EOF
5258 done
5259
5260 check_cc <<EOF && enable pragma_deprecated
5261 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5262 EOF
5263
5264 check_cc <<EOF && enable attribute_packed
5265 struct { int x; } __attribute__((packed)) x;
5266 EOF
5267
5268 check_cc <<EOF && enable attribute_may_alias
5269 union { int x; } __attribute__((may_alias)) x;
5270 EOF
5271
5272 check_cc <<EOF || die "endian test failed"
5273 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5274 EOF
5275 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5276
5277 if ! enabled ppc64 || enabled bigendian; then
5278     disable vsx
5279 fi
5280
5281 check_gas() {
5282     log "check_gas using '$as' as AS"
5283     # :vararg is used on aarch64, arm and ppc altivec
5284     check_as <<EOF || return 1
5285 .macro m n, y:vararg=0
5286 \n: .int \y
5287 .endm
5288 m x
5289 EOF
5290     # .altmacro is only used in arm asm
5291     ! enabled arm || check_as <<EOF || return 1
5292 .altmacro
5293 EOF
5294     enable gnu_as
5295     return 0
5296 }
5297
5298 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5299     nogas=:
5300     enabled_any arm aarch64 && nogas=die
5301     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5302     as_noop=-v
5303
5304     case $as_type in
5305         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5306         gcc)  gaspp_as_type=gas ;;
5307         *)    gaspp_as_type=$as_type ;;
5308     esac
5309
5310     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5311
5312     test "${as#*gas-preprocessor.pl}" != "$as" ||
5313     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5314         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5315
5316     if ! check_gas ; then
5317         as=${gas:=$as}
5318         check_gas || \
5319             $nogas "GNU assembler not found, install/update gas-preprocessor"
5320     fi
5321
5322     check_as <<EOF && enable as_func
5323 .func test
5324 .endfunc
5325 EOF
5326 fi
5327
5328 check_inline_asm inline_asm_labels '"1:\n"'
5329
5330 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5331
5332 if enabled aarch64; then
5333     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5334     # internal assembler in clang 3.3 does not support this instruction
5335     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5336     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5337
5338     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5339
5340 elif enabled alpha; then
5341
5342     check_cflags -mieee
5343
5344 elif enabled arm; then
5345
5346     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5347
5348     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5349 float func(float a, float b){ return a+b; }
5350 EOF
5351
5352     enabled thumb && check_cflags -mthumb || check_cflags -marm
5353
5354     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5355         enable vfp_args
5356     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5357         enable vfp_args
5358     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5359         case "${cross_prefix:-$cc}" in
5360             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5361             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5362 __asm__ (".eabi_attribute 28, 1");
5363 int main(void) { return 0; }
5364 EOF
5365         esac
5366         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5367     fi
5368
5369     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5370     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5371     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5372     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5373     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5374     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5375     enabled setend  && check_insn setend  'setend be'
5376
5377     [ $target_os = linux ] || [ $target_os = android ] ||
5378         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5379             $ARCH_EXT_LIST_ARM
5380
5381     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5382
5383     check_as <<EOF && enable as_dn_directive
5384 ra .dn d0.i16
5385 .unreq ra
5386 EOF
5387     check_as <<EOF && enable as_fpu_directive
5388 .fpu neon
5389 EOF
5390
5391     # llvm's integrated assembler supports .object_arch from llvm 3.5
5392     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5393         check_as <<EOF && enable as_object_arch
5394 .object_arch armv4
5395 EOF
5396
5397     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5398
5399 elif enabled mips; then
5400
5401     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5402     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5403     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5404
5405     # Enable minimum ISA based on selected options
5406     if enabled mips64; then
5407         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5408         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5409         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5410     else
5411         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5412         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5413         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5414         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5415     fi
5416
5417     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5418     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5419     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5420     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5421     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5422
5423     if enabled bigendian && enabled msa; then
5424         disable msa
5425     fi
5426
5427 elif enabled parisc; then
5428
5429     if enabled gcc; then
5430         case $($cc -dumpversion) in
5431             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5432         esac
5433     fi
5434
5435 elif enabled ppc; then
5436
5437     enable local_aligned_8 local_aligned_16 local_aligned_32
5438
5439     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5440     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5441     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5442     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5443
5444     # AltiVec flags: The FSF version of GCC differs from the Apple version
5445     if enabled altivec; then
5446         check_cflags -maltivec -mabi=altivec &&
5447         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5448         check_cflags -faltivec
5449
5450         # check if our compiler supports Motorola AltiVec C API
5451         check_cc <<EOF || disable altivec
5452 $inc_altivec_h
5453 int main(void) {
5454     vector signed int v1 = (vector signed int) { 0 };
5455     vector signed int v2 = (vector signed int) { 1 };
5456     v1 = vec_add(v1, v2);
5457     return 0;
5458 }
5459 EOF
5460
5461         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5462     fi
5463
5464     if enabled vsx; then
5465         check_cflags -mvsx &&
5466         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5467     fi
5468
5469     if enabled power8; then
5470         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5471     fi
5472
5473 elif enabled x86; then
5474
5475     check_builtin rdtsc    intrin.h   "__rdtsc()"
5476     check_builtin mm_empty mmintrin.h "_mm_empty()"
5477
5478     enable local_aligned_8 local_aligned_16 local_aligned_32
5479
5480     # check whether EBP is available on x86
5481     # As 'i' is stored on the stack, this program will crash
5482     # if the base pointer is used to access it because the
5483     # base pointer is cleared in the inline assembly code.
5484     check_exec_crash <<EOF && enable ebp_available
5485 volatile int i=0;
5486 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5487 return i;
5488 EOF
5489
5490     # check whether EBX is available on x86
5491     check_inline_asm ebx_available '""::"b"(0)' &&
5492         check_inline_asm ebx_available '"":::"%ebx"'
5493
5494     # check whether xmm clobbers are supported
5495     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5496
5497     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5498         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5499
5500     # check whether binutils is new enough to compile SSSE3/MMXEXT
5501     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5502     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5503
5504     probe_x86asm(){
5505         x86asmexe_probe=$1
5506         if check_cmd $x86asmexe_probe -v; then
5507             x86asmexe=$x86asmexe_probe
5508             x86asm_type=nasm
5509             x86asm_debug="-g -F dwarf"
5510         elif check_cmd $x86asmexe_probe --version; then
5511             x86asmexe=$x86asmexe_probe
5512             x86asm_type=yasm
5513             x86asm_debug="-g dwarf2"
5514         fi
5515         check_x86asm "movbe ecx, [5]" && enable x86asm
5516     }
5517
5518     if ! disabled_any asm mmx x86asm; then
5519         disable x86asm
5520         for program in $x86asmexe nasm yasm; do
5521             probe_x86asm $program && break
5522         done
5523         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5524         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5525         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5526         X86ASMFLAGS="-f $objformat"
5527         enabled pic               && append X86ASMFLAGS "-DPIC"
5528         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5529         case "$objformat" in
5530             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5531         esac
5532
5533         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5534         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5535         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5536         check_x86asm "CPU amdnop" || disable cpunop
5537     fi
5538
5539     case "$cpu" in
5540         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5541             disable fast_clz
5542         ;;
5543     esac
5544
5545 fi
5546
5547 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5548
5549 check_ldflags -Wl,--as-needed
5550 check_ldflags -Wl,-z,noexecstack
5551
5552 if check_func dlopen && check_func dlsym; then
5553     ldl=
5554 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5555     ldl=-ldl
5556 fi
5557
5558 avisynth_demuxer_extralibs='$ldl'
5559 cuda_extralibs='$ldl'
5560 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5561 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5562 frei0r_filter_extralibs='$ldl'
5563 frei0r_src_filter_extralibs='$ldl'
5564 ladspa_filter_extralibs='$ldl'
5565 nvenc_extralibs='$ldl'
5566 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5567 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5568
5569 if ! disabled network; then
5570     check_func getaddrinfo $network_extralibs
5571     check_func inet_aton $network_extralibs
5572
5573     check_type netdb.h "struct addrinfo"
5574     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5575     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5576     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5577     check_type poll.h "struct pollfd"
5578     check_type netinet/sctp.h "struct sctp_event_subscribe"
5579     check_struct "sys/socket.h" "struct msghdr" msg_flags
5580     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5581     check_type netinet/in.h "struct sockaddr_in6"
5582     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5583     check_type "sys/types.h sys/socket.h" socklen_t
5584
5585     # Prefer arpa/inet.h over winsock2
5586     if check_header arpa/inet.h ; then
5587         check_func closesocket
5588     elif check_header winsock2.h ; then
5589         check_func_headers winsock2.h closesocket -lws2 &&
5590             network_extralibs="-lws2" ||
5591         { check_func_headers winsock2.h closesocket -lws2_32 &&
5592             network_extralibs="-lws2_32"; } || disable winsock2_h network
5593         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5594
5595         check_type ws2tcpip.h socklen_t
5596         check_type ws2tcpip.h "struct addrinfo"
5597         check_type ws2tcpip.h "struct group_source_req"
5598         check_type ws2tcpip.h "struct ip_mreq_source"
5599         check_type ws2tcpip.h "struct ipv6_mreq"
5600         check_type winsock2.h "struct pollfd"
5601         check_struct winsock2.h "struct sockaddr" sa_len
5602         check_type ws2tcpip.h "struct sockaddr_in6"
5603         check_type ws2tcpip.h "struct sockaddr_storage"
5604     else
5605         disable network
5606     fi
5607 fi
5608
5609 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5610 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5611 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5612 check_builtin sarestart signal.h "SA_RESTART"
5613 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5614 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5615 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5616 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5617 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5618
5619 case "$custom_allocator" in
5620     jemalloc)
5621         # jemalloc by default does not use a prefix
5622         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5623     ;;
5624     tcmalloc)
5625         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5626         malloc_prefix=tc_
5627     ;;
5628 esac
5629
5630 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5631 check_func  ${malloc_prefix}memalign            && enable memalign
5632 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5633
5634 check_func  access
5635 check_func_headers stdlib.h arc4random
5636 check_func_headers time.h clock_gettime ||
5637     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5638 check_func  fcntl
5639 check_func  fork
5640 check_func  gethrtime
5641 check_func  getopt
5642 check_func  getrusage
5643 check_func  gettimeofday
5644 check_func  isatty
5645 check_func  mach_absolute_time
5646 check_func  mkstemp
5647 check_func  mmap
5648 check_func  mprotect
5649 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5650 check_func_headers time.h nanosleep ||
5651     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5652 check_func  sched_getaffinity
5653 check_func  setrlimit
5654 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5655 check_func  strerror_r
5656 check_func  sysconf
5657 check_func  sysctl
5658 check_func  usleep
5659
5660 check_func_headers conio.h kbhit
5661 check_func_headers io.h setmode
5662 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5663 check_func_headers stdlib.h getenv
5664 check_func_headers sys/stat.h lstat
5665
5666 check_func_headers windows.h GetProcessAffinityMask
5667 check_func_headers windows.h GetProcessTimes
5668 check_func_headers windows.h GetSystemTimeAsFileTime
5669 check_func_headers windows.h LoadLibrary
5670 check_func_headers windows.h MapViewOfFile
5671 check_func_headers windows.h PeekNamedPipe
5672 check_func_headers windows.h SetConsoleTextAttribute
5673 check_func_headers windows.h SetConsoleCtrlHandler
5674 check_func_headers windows.h Sleep
5675 check_func_headers windows.h VirtualAlloc
5676 check_struct windows.h "CONDITION_VARIABLE" Ptr
5677 check_func_headers glob.h glob
5678 enabled xlib &&
5679     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5680
5681 check_header AudioToolbox/AudioToolbox.h
5682 check_header d3d11.h
5683 check_header direct.h
5684 check_header dirent.h
5685 check_header dlfcn.h
5686 check_header dxva.h
5687 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5688 check_header io.h
5689 check_header libcrystalhd/libcrystalhd_if.h
5690 check_header mach/mach_time.h
5691 check_header malloc.h
5692 check_header net/udplite.h
5693 check_header poll.h
5694 check_header sys/mman.h
5695 check_header sys/param.h
5696 check_header sys/resource.h
5697 check_header sys/select.h
5698 check_header sys/time.h
5699 check_header sys/un.h
5700 check_header termios.h
5701 check_header unistd.h
5702 check_header valgrind/valgrind.h
5703 check_header VideoDecodeAcceleration/VDADecoder.h
5704 check_header VideoToolbox/VideoToolbox.h
5705 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5706 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5707 check_header windows.h
5708 check_header X11/extensions/XvMClib.h
5709 check_header asm/types.h
5710
5711 # it seems there are versions of clang in some distros that try to use the
5712 # gcc headers, which explodes for stdatomic
5713 # so we also check that atomics actually work here
5714 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5715
5716 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5717 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5718 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5719 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5720
5721 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5722
5723 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5724
5725 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5726 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5727 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5728 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5729 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5730
5731 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5732 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5733 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5734 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5735 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5736 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5737 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5738 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5739 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5740
5741 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5742
5743 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5744
5745 if ! disabled w32threads && ! enabled pthreads; then
5746     check_func_headers "windows.h process.h" _beginthreadex &&
5747         enable w32threads || disable w32threads
5748     if ! enabled w32threads && enabled winrt; then
5749         check_func_headers "windows.h" CreateThread &&
5750             enable w32threads || disable w32threads
5751     fi
5752 fi
5753
5754 # check for some common methods of building with pthread support
5755 # do this before the optional library checks as some of them require pthreads
5756 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5757     if check_lib pthreads pthread.h pthread_join   -pthread &&
5758        check_lib pthreads pthread.h pthread_create -pthread; then
5759         add_cflags -pthread
5760     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5761          check_lib pthreads pthread.h pthread_create -pthreads; then
5762         add_cflags -pthreads
5763     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5764          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5765         add_cflags -ldl -pthread
5766     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5767          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5768         :
5769     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5770          check_lib pthreads pthread.h pthread_create -lpthread; then
5771         :
5772     elif check_func pthread_join && check_func pthread_create; then
5773         enable pthreads
5774     fi
5775     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5776 fi
5777
5778
5779 if enabled pthreads; then
5780   check_func pthread_cancel
5781 fi
5782
5783 enabled pthreads &&
5784     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5785
5786 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5787 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5788 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5789
5790 check_lib libm math.h sin -lm && LIBM="-lm"
5791 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5792
5793 atan2f_args=2
5794 copysign_args=2
5795 hypot_args=2
5796 ldexpf_args=2
5797 powf_args=2
5798
5799 for func in $MATH_FUNCS; do
5800     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5801 done
5802
5803 for func in $COMPLEX_FUNCS; do
5804     eval check_complexfunc $func \${${func}_args:-1}
5805 done
5806
5807 # these are off by default, so fail if requested and not available
5808 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5809 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5810                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5811 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5812 enabled cuvid             && { enabled cuda ||
5813                                die "ERROR: CUVID requires CUDA"; }
5814 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5815 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5816 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5817 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5818                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5819 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5820 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5821 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5822 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5823 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5824 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5825 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5826 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5827 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5828 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5829                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5830                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5831 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5832 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5833 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5834                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5835                                  warn "using libfdk without pkg-config"; } }
5836 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5837 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5838 enabled fontconfig        && enable libfontconfig
5839 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5840 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5841 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5842 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5843 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5844                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5845                                done || die "ERROR: libgsm not found"; }
5846 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5847 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5848 # While it may appear that require is being used as a pkg-config
5849 # fallback for libmfx, it is actually being used to detect a different
5850 # installation route altogether.  If libmfx is installed via the Intel
5851 # Media SDK or Intel Media Server Studio, these don't come with
5852 # pkg-config support.  Instead, users should make sure that the build
5853 # can find the libraries and headers through other means.
5854 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5855                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5856 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5857 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5858 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5859 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5860 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5861 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5862 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5863                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5864                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5865                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5866 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5867 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5868                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5869                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5870                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5871                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5872                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5873                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5874                                die "ERROR: libopenjpeg not found"; }
5875 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5876 enabled libopus           && {
5877     enabled libopus_decoder && {
5878         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5879     }
5880     enabled libopus_encoder && {
5881         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5882     }
5883 }
5884 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5885 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5886 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5887 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5888 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5889 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5890                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5891 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5892 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5893 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5894 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5895 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5896 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5897 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5898                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5899                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5900 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5901 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5902 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5903 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5904
5905 enabled libvpx            && {
5906     enabled libvpx_vp8_decoder && {
5907         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5908             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5909                 die "ERROR: libvpx decoder version must be >=0.9.1";
5910     }
5911     enabled libvpx_vp8_encoder && {
5912         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5913             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5914                 die "ERROR: libvpx encoder version must be >=0.9.7";
5915     }
5916     enabled libvpx_vp9_decoder && {
5917         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5918             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5919     }
5920     enabled libvpx_vp9_encoder && {
5921         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5922             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5923     }
5924     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5925         die "libvpx enabled but no supported decoders found"
5926     fi
5927 }
5928
5929 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5930 enabled libwebp           && {
5931     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5932     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5933 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5934                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5935                                  warn "using libx264 without pkg-config"; } } &&
5936                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5937                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5938                              { check_cpp_condition x264.h "X264_MPEG2" &&
5939                                enable libx262; }
5940 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5941                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5942                                die "ERROR: libx265 version must be >= 68."; }
5943 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5944 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5945 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5946 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5947 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5948                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5949                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5950 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5951 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5952                                { ! enabled cross_compile &&
5953                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5954                                  add_ldflags -L/opt/vc/lib/ &&
5955                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5956                                die "ERROR: mmal not found" &&
5957                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5958 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5959                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5960                                die "ERROR: openal not found"; } &&
5961                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5962                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5963 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5964                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5965                                die "ERROR: opencl not found"; } &&
5966                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5967                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5968                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5969 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5970                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5971                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5972                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5973                                die "ERROR: opengl not found."
5974                              }
5975 enabled omx_rpi           && { check_header OMX_Core.h ||
5976                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5977                                die "ERROR: OpenMAX IL headers not found"; }
5978 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5979 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5980                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5981                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5982                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5983                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5984                                die "ERROR: openssl not found"; }
5985 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5986
5987 if enabled gcrypt; then
5988     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5989     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5990         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5991         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5992         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5993             die "ERROR: gcrypt not found"
5994         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5995     else
5996         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5997     fi
5998 fi
5999
6000 disabled sdl && disable sdl2
6001 if ! disabled sdl2; then
6002     SDL2_CONFIG="${cross_prefix}sdl2-config"
6003     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
6004         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6005         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6006         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6007     else
6008       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6009         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6010         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6011         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6012         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6013         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6014       fi
6015     fi
6016     if test $target_os = "mingw32"; then
6017         sdl2_extralibs="$sdl2_extralibs -mconsole"
6018     fi
6019 fi
6020 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6021
6022 if enabled decklink; then
6023     case $target_os in
6024         mingw32*|mingw64*|win32|win64)
6025             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6026             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6027             ;;
6028     esac
6029 fi
6030
6031 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6032     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
6033
6034 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6035                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
6036
6037 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6038 enabled makeinfo \
6039     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6040     && enable makeinfo_html || disable makeinfo_html
6041 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6042 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6043 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6044 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6045
6046 check_header linux/fb.h
6047 check_header linux/videodev.h
6048 check_header linux/videodev2.h
6049 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6050
6051 check_header sys/videoio.h
6052 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6053
6054 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6055 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6056 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6057 # w32api 3.12 had it defined wrong
6058 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6059
6060 check_type "dshow.h" IBaseFilter
6061
6062 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6063 { check_header dev/bktr/ioctl_meteor.h &&
6064   check_header dev/bktr/ioctl_bt848.h; } ||
6065 { check_header machine/ioctl_meteor.h &&
6066   check_header machine/ioctl_bt848.h; } ||
6067 { check_header dev/video/meteor/ioctl_meteor.h &&
6068   check_header dev/video/bktr/ioctl_bt848.h; } ||
6069 check_header dev/ic/bt8xx.h
6070
6071 if check_struct sys/soundcard.h audio_buf_info bytes; then
6072     enable_safe sys/soundcard.h
6073 else
6074     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6075     #include <sys/soundcard.h>
6076     audio_buf_info abc;
6077 EOF
6078 fi
6079 check_header soundcard.h
6080
6081 enabled_any alsa_indev alsa_outdev &&
6082     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6083
6084 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6085     check_func jack_port_get_latency_range -ljack
6086
6087 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6088
6089 if enabled libcdio; then
6090     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6091     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6092     die "ERROR: No usable libcdio/cdparanoia found"
6093 fi
6094
6095 if ! disabled libxcb; then
6096     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6097         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6098     } && enable libxcb
6099
6100 if enabled libxcb; then
6101     disabled libxcb_shm || {
6102         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6103             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6104         } && check_header sys/shm.h && enable libxcb_shm; }
6105
6106     disabled libxcb_xfixes || {
6107         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6108             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6109         } && enable libxcb_xfixes; }
6110
6111     disabled libxcb_shape || {
6112         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6113             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6114         } && enable libxcb_shape; }
6115
6116     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6117     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6118 fi
6119 fi
6120
6121 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6122
6123 enabled vaapi &&
6124     check_lib vaapi va/va.h vaInitialize -lva
6125
6126 enabled vaapi &&
6127     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6128     disable vaapi
6129
6130 enabled vaapi &&
6131     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6132
6133 enabled vaapi &&
6134     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6135
6136 enabled vdpau &&
6137     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6138     disable vdpau
6139
6140 enabled vdpau &&
6141     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6142
6143 if enabled x86; then
6144     case $target_os in
6145         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6146             ;;
6147         *)
6148             disable cuda cuvid nvenc
6149             ;;
6150     esac
6151 else
6152     disable cuda cuvid nvenc
6153 fi
6154
6155 enabled nvenc &&
6156     check_cc -I$source_path <<EOF || disable nvenc
6157 #include "compat/nvenc/nvEncodeAPI.h"
6158 NV_ENCODE_API_FUNCTION_LIST flist;
6159 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6160 int main(void) { return 0; }
6161 EOF
6162
6163 # Funny iconv installations are not unusual, so check it after all flags have been set
6164 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6165
6166 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6167
6168 # add some useful compiler flags if supported
6169 check_cflags -Wdeclaration-after-statement
6170 check_cflags -Wall
6171 check_cflags -Wdisabled-optimization
6172 check_cflags -Wpointer-arith
6173 check_cflags -Wredundant-decls
6174 check_cflags -Wwrite-strings
6175 check_cflags -Wtype-limits
6176 check_cflags -Wundef
6177 check_cflags -Wmissing-prototypes
6178 check_cflags -Wno-pointer-to-int-cast
6179 check_cflags -Wstrict-prototypes
6180 check_cflags -Wempty-body
6181
6182 if enabled extra_warnings; then
6183     check_cflags -Wcast-qual
6184     check_cflags -Wextra
6185     check_cflags -Wpedantic
6186 fi
6187
6188 check_disable_warning(){
6189     warning_flag=-W${1#-Wno-}
6190     test_cflags $warning_flag && add_cflags $1
6191 }
6192
6193 check_disable_warning -Wno-parentheses
6194 check_disable_warning -Wno-switch
6195 check_disable_warning -Wno-format-zero-length
6196 check_disable_warning -Wno-pointer-sign
6197 check_disable_warning -Wno-unused-const-variable
6198
6199 check_disable_warning_headers(){
6200     warning_flag=-W${1#-Wno-}
6201     test_cflags $warning_flag && add_cflags_headers $1
6202 }
6203
6204 check_disable_warning_headers -Wno-deprecated-declarations
6205 check_disable_warning_headers -Wno-unused-variable
6206
6207 check_cc <<EOF && enable blocks_extension
6208 void (^block)(void);
6209 EOF
6210
6211 # add some linker flags
6212 check_ldflags -Wl,--warn-common
6213 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6214 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6215 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6216 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6217
6218 # add some strip flags
6219 check_stripflags -x
6220
6221 enabled neon_clobber_test &&
6222     check_ldflags -Wl,--wrap,avcodec_open2              \
6223                   -Wl,--wrap,avcodec_decode_audio4      \
6224                   -Wl,--wrap,avcodec_decode_video2      \
6225                   -Wl,--wrap,avcodec_decode_subtitle2   \
6226                   -Wl,--wrap,avcodec_encode_audio2      \
6227                   -Wl,--wrap,avcodec_encode_video2      \
6228                   -Wl,--wrap,avcodec_encode_subtitle    \
6229                   -Wl,--wrap,avcodec_send_packet        \
6230                   -Wl,--wrap,avcodec_receive_packet     \
6231                   -Wl,--wrap,avcodec_send_frame         \
6232                   -Wl,--wrap,avcodec_receive_frame      \
6233                   -Wl,--wrap,swr_convert                \
6234                   -Wl,--wrap,avresample_convert ||
6235     disable neon_clobber_test
6236
6237 enabled xmm_clobber_test &&
6238     check_ldflags -Wl,--wrap,avcodec_open2              \
6239                   -Wl,--wrap,avcodec_decode_audio4      \
6240                   -Wl,--wrap,avcodec_decode_video2      \
6241                   -Wl,--wrap,avcodec_decode_subtitle2   \
6242                   -Wl,--wrap,avcodec_encode_audio2      \
6243                   -Wl,--wrap,avcodec_encode_video2      \
6244                   -Wl,--wrap,avcodec_encode_subtitle    \
6245                   -Wl,--wrap,avcodec_send_packet        \
6246                   -Wl,--wrap,avcodec_receive_packet     \
6247                   -Wl,--wrap,avcodec_send_frame         \
6248                   -Wl,--wrap,avcodec_receive_frame      \
6249                   -Wl,--wrap,swr_convert                \
6250                   -Wl,--wrap,avresample_convert         \
6251                   -Wl,--wrap,sws_scale ||
6252     disable xmm_clobber_test
6253
6254 check_ld "cc" <<EOF && enable proper_dce
6255 extern const int array[512];
6256 static inline int func(void) { return array[0]; }
6257 int main(void) { return 0; }
6258 EOF
6259
6260 if enabled proper_dce; then
6261     echo "X { local: *; };" > $TMPV
6262     if test_ldflags -Wl,${version_script},$TMPV; then
6263         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6264         check_cc <<EOF && enable symver_asm_label
6265 void ff_foo(void) __asm__ ("av_foo@VERSION");
6266 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6267 EOF
6268         check_cc <<EOF && enable symver_gnu_asm
6269 __asm__(".symver ff_foo,av_foo@VERSION");
6270 void ff_foo(void) {}
6271 EOF
6272     fi
6273 fi
6274
6275 if [ -z "$optflags" ]; then
6276     if enabled small; then
6277         optflags=$cflags_size
6278     elif enabled optimizations; then
6279         optflags=$cflags_speed
6280     else
6281         optflags=$cflags_noopt
6282     fi
6283 fi
6284
6285 if [ -z "$nvccflags" ]; then
6286     nvccflags=$nvccflags_default
6287 fi
6288
6289 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6290     nvccflags="$nvccflags -m64"
6291 else
6292     nvccflags="$nvccflags -m32"
6293 fi
6294
6295 check_optflags(){
6296     check_cflags "$@"
6297     enabled lto && check_ldflags "$@"
6298 }
6299
6300 check_optflags $optflags
6301 check_optflags -fno-math-errno
6302 check_optflags -fno-signed-zeros
6303
6304 if enabled lto; then
6305     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6306     check_cflags  -flto
6307     check_ldflags -flto $cpuflags
6308     disable inline_asm_direct_symbol_refs
6309 fi
6310
6311 enabled ftrapv && check_cflags -ftrapv
6312
6313 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6314 int x;
6315 EOF
6316
6317
6318 if enabled icc; then
6319     # Just warnings, no remarks
6320     check_cflags -w1
6321     # -wd: Disable following warnings
6322     # 144, 167, 556: -Wno-pointer-sign
6323     # 188: enumerated type mixed with another type
6324     # 1292: attribute "foo" ignored
6325     # 1419: external declaration in primary source file
6326     # 10006: ignoring unknown option -fno-signed-zeros
6327     # 10148: ignoring unknown option -Wno-parentheses
6328     # 10156: ignoring option '-W'; no argument required
6329     # 13200: No EMMS instruction before call to function
6330     # 13203: No EMMS instruction before return from function
6331     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6332     # 11030: Warning unknown option --as-needed
6333     # 10156: ignoring option '-export'; no argument required
6334     check_ldflags -wd10156,11030
6335     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6336     enable ebp_available
6337     # The test above does not test linking
6338     enabled lto && disable symver_asm_label
6339     if enabled x86_32; then
6340         icc_version=$($cc -dumpversion)
6341         test ${icc_version%%.*} -ge 11 &&
6342             check_cflags -falign-stack=maintain-16-byte ||
6343             disable aligned_stack
6344     fi
6345 elif enabled ccc; then
6346     # disable some annoying warnings
6347     add_cflags -msg_disable bitnotint
6348     add_cflags -msg_disable mixfuncvoid
6349     add_cflags -msg_disable nonstandcast
6350     add_cflags -msg_disable unsupieee
6351 elif enabled gcc; then
6352     check_optflags -fno-tree-vectorize
6353     check_cflags -Werror=format-security
6354     check_cflags -Werror=implicit-function-declaration
6355     check_cflags -Werror=missing-prototypes
6356     check_cflags -Werror=return-type
6357     check_cflags -Werror=vla
6358     check_cflags -Wformat
6359     check_cflags -fdiagnostics-color=auto
6360     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6361 elif enabled llvm_gcc; then
6362     check_cflags -mllvm -stack-alignment=16
6363 elif enabled clang; then
6364     check_cflags -mllvm -stack-alignment=16
6365     check_cflags -mstack-alignment=16
6366     check_cflags -Qunused-arguments
6367     check_cflags -Werror=implicit-function-declaration
6368     check_cflags -Werror=missing-prototypes
6369     check_cflags -Werror=return-type
6370 elif enabled cparser; then
6371     add_cflags -Wno-missing-variable-declarations
6372     add_cflags -Wno-empty-statement
6373 elif enabled armcc; then
6374     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6375     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6376     # 2523: use of inline assembly is deprecated
6377     add_cflags -W${armcc_opt},--diag_suppress=2523
6378     add_cflags -W${armcc_opt},--diag_suppress=1207
6379     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6380     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6381     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6382     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6383 elif enabled tms470; then
6384     add_cflags -pds=824 -pds=837
6385     disable inline_asm
6386 elif enabled pathscale; then
6387     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6388 elif enabled_any msvc icl; then
6389     enabled x86_32 && disable aligned_stack
6390     enabled_all x86_32 debug && add_cflags -Oy-
6391     enabled debug && add_ldflags -debug
6392     enable pragma_deprecated
6393     if enabled icl; then
6394         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6395         # (correctly) on icl 13.x.
6396         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6397             add_cflags -Qansi-alias
6398         # Some inline asm is not compilable in debug
6399         if enabled debug; then
6400             disable ebp_available
6401             disable ebx_available
6402         fi
6403     fi
6404     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6405     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6406     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6407     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6408     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6409     # MSVC 2013 and newer can handle it fine.
6410     # If this declspec fails, force including stdlib.h before the restrict redefinition
6411     # happens in config.h.
6412     if [ $_restrict != restrict ]; then
6413         check_cc <<EOF || add_cflags -FIstdlib.h
6414 __declspec($_restrict) void* foo(int);
6415 EOF
6416     fi
6417     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6418     # Issue has been fixed in MSVC v19.00.24218.
6419     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6420         check_cflags -d2SSAOptimizer-
6421     # enable utf-8 source processing on VS2015 U2 and newer
6422     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6423         add_cflags -utf-8
6424 fi
6425
6426 for pfx in "" host_; do
6427     varname=${pfx%_}cc_type
6428     eval "type=\$$varname"
6429     if [ "$type" = "msvc" ]; then
6430         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6431 static inline int foo(int a) { return a; }
6432 EOF
6433     fi
6434 done
6435
6436 case $as_type in
6437     clang)
6438         add_asflags -Qunused-arguments
6439     ;;
6440 esac
6441
6442 case $ld_type in
6443     clang)
6444         check_ldflags -Qunused-arguments
6445     ;;
6446 esac
6447
6448 case $target_os in
6449     osf1)
6450         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6451     ;;
6452 esac
6453
6454 enable frame_thread_encoder
6455
6456 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6457
6458 check_deps $CONFIG_LIST       \
6459            $CONFIG_EXTRA      \
6460            $HAVE_LIST         \
6461            $ALL_COMPONENTS    \
6462
6463 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6464
6465
6466 if test $target_os = "haiku"; then
6467     disable memalign
6468     disable posix_memalign
6469 fi
6470
6471 # add_dep lib dep
6472 # -> enable ${lib}_deps_${dep}
6473 # -> add $dep to ${lib}_deps only once
6474 add_dep() {
6475     lib=$1
6476     dep=$2
6477     enabled "${lib}_deps_${dep}" && return 0
6478     enable  "${lib}_deps_${dep}"
6479     prepend "${lib}_deps" $dep
6480 }
6481
6482 # merge deps lib components
6483 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6484 merge_deps() {
6485     lib=$1
6486     shift
6487     for comp in $*; do
6488         enabled $comp || continue
6489         eval "dep=\"\$${comp}_deps\""
6490         for d in $dep; do
6491             add_dep $lib $d
6492         done
6493     done
6494 }
6495
6496 merge_deps libavfilter $FILTER_LIST
6497
6498 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6499
6500 for thread in $THREADS_LIST; do
6501     if enabled $thread; then
6502         test -n "$thread_type" &&
6503             die "ERROR: Only one thread type must be selected." ||
6504             thread_type="$thread"
6505     fi
6506 done
6507
6508 if disabled stdatomic_h; then
6509     if enabled atomics_gcc; then
6510         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6511     elif enabled atomics_win32; then
6512         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6513     elif enabled atomics_suncc; then
6514         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6515     elif enabled pthreads; then
6516         add_compat atomics/pthread/stdatomic.o
6517         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6518     else
6519         enabled threads && die "Threading is enabled, but no atomics are available"
6520         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6521     fi
6522 fi
6523
6524 # Check if requested libraries were found.
6525 for lib in $AUTODETECT_LIBS; do
6526     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6527 done
6528
6529 enabled zlib && add_cppflags -DZLIB_CONST
6530
6531 # conditional library dependencies, in linking order
6532 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6533 enabled afir_filter         && prepend avfilter_deps "avcodec"
6534 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6535 enabled aresample_filter    && prepend avfilter_deps "swresample"
6536 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6537 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6538 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6539 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6540 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6541 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6542 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6543 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6544 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6545 enabled pan_filter          && prepend avfilter_deps "swresample"
6546 enabled pp_filter           && prepend avfilter_deps "postproc"
6547 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6548 enabled resample_filter && prepend avfilter_deps "avresample"
6549 enabled sab_filter          && prepend avfilter_deps "swscale"
6550 enabled scale_filter    && prepend avfilter_deps "swscale"
6551 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6552 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6553 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6554 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6555 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6556 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6557 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6558 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6559 enabled spp_filter          && prepend avfilter_deps "avcodec"
6560 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6561 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6562 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6563
6564 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6565
6566 enabled opus_decoder    && prepend avcodec_deps "swresample"
6567
6568 expand_deps(){
6569     lib_deps=${1}_deps
6570     eval "deps=\$$lib_deps"
6571     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6572     unique $lib_deps
6573 }
6574
6575 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6576 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6577
6578 map 'expand_deps $v' $LIBRARY_LIST
6579
6580 license="LGPL version 2.1 or later"
6581 if enabled nonfree; then
6582     license="nonfree and unredistributable"
6583 elif enabled gplv3; then
6584     license="GPL version 3 or later"
6585 elif enabled lgplv3; then
6586     license="LGPL version 3 or later"
6587 elif enabled gpl; then
6588     license="GPL version 2 or later"
6589 fi
6590
6591 if test "$quiet" != "yes"; then
6592
6593 echo "install prefix            $prefix"
6594 echo "source path               $source_path"
6595 echo "C compiler                $cc"
6596 echo "C library                 $libc_type"
6597 if test "$host_cc" != "$cc"; then
6598     echo "host C compiler           $host_cc"
6599     echo "host C library            $host_libc_type"
6600 fi
6601 echo "ARCH                      $arch ($cpu)"
6602 if test "$build_suffix" != ""; then
6603     echo "build suffix              $build_suffix"
6604 fi
6605 if test "$progs_suffix" != ""; then
6606     echo "progs suffix              $progs_suffix"
6607 fi
6608 if test "$extra_version" != ""; then
6609     echo "version string suffix     $extra_version"
6610 fi
6611 echo "big-endian                ${bigendian-no}"
6612 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6613 if enabled x86; then
6614     echo "standalone assembly       ${x86asm-no}"
6615     echo "x86 assembler             ${x86asmexe}"
6616     echo "MMX enabled               ${mmx-no}"
6617     echo "MMXEXT enabled            ${mmxext-no}"
6618     echo "3DNow! enabled            ${amd3dnow-no}"
6619     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6620     echo "SSE enabled               ${sse-no}"
6621     echo "SSSE3 enabled             ${ssse3-no}"
6622     echo "AESNI enabled             ${aesni-no}"
6623     echo "AVX enabled               ${avx-no}"
6624     echo "XOP enabled               ${xop-no}"
6625     echo "FMA3 enabled              ${fma3-no}"
6626     echo "FMA4 enabled              ${fma4-no}"
6627     echo "i686 features enabled     ${i686-no}"
6628     echo "CMOV is fast              ${fast_cmov-no}"
6629     echo "EBX available             ${ebx_available-no}"
6630     echo "EBP available             ${ebp_available-no}"
6631 fi
6632 if enabled aarch64; then
6633     echo "NEON enabled              ${neon-no}"
6634     echo "VFP enabled               ${vfp-no}"
6635 fi
6636 if enabled arm; then
6637     echo "ARMv5TE enabled           ${armv5te-no}"
6638     echo "ARMv6 enabled             ${armv6-no}"
6639     echo "ARMv6T2 enabled           ${armv6t2-no}"
6640     echo "VFP enabled               ${vfp-no}"
6641     echo "NEON enabled              ${neon-no}"
6642     echo "THUMB enabled             ${thumb-no}"
6643 fi
6644 if enabled mips; then
6645     echo "MIPS FPU enabled          ${mipsfpu-no}"
6646     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6647     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6648     echo "MIPS MSA enabled          ${msa-no}"
6649     echo "LOONGSON MMI enabled      ${mmi-no}"
6650 fi
6651 if enabled ppc; then
6652     echo "AltiVec enabled           ${altivec-no}"
6653     echo "VSX enabled               ${vsx-no}"
6654     echo "POWER8 enabled            ${power8-no}"
6655     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6656     echo "dcbzl available           ${dcbzl-no}"
6657 fi
6658 echo "debug symbols             ${debug-no}"
6659 echo "strip symbols             ${stripping-no}"
6660 echo "optimize for size         ${small-no}"
6661 echo "optimizations             ${optimizations-no}"
6662 echo "static                    ${static-no}"
6663 echo "shared                    ${shared-no}"
6664 echo "postprocessing support    ${postproc-no}"
6665 echo "network support           ${network-no}"
6666 echo "threading support         ${thread_type-no}"
6667 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6668 echo "texi2html enabled         ${texi2html-no}"
6669 echo "perl enabled              ${perl-no}"
6670 echo "pod2man enabled           ${pod2man-no}"
6671 echo "makeinfo enabled          ${makeinfo-no}"
6672 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6673 test -n "$random_seed" &&
6674     echo "random seed               ${random_seed}"
6675 echo
6676
6677 echo "External libraries:"
6678 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6679 echo
6680
6681 echo "External libraries providing hardware acceleration:"
6682 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6683 echo
6684
6685 echo "Libraries:"
6686 print_enabled '' $LIBRARY_LIST | print_in_columns
6687 echo
6688
6689 echo "Programs:"
6690 print_enabled '' $PROGRAM_LIST | print_in_columns
6691 echo
6692
6693 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6694     echo "Enabled ${type}s:"
6695     eval list=\$$(toupper $type)_LIST
6696     print_enabled '_*' $list | print_in_columns
6697     echo
6698 done
6699
6700 if test -n "$ignore_tests"; then
6701     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6702     echo "Ignored FATE tests:"
6703     echo $ignore_tests | print_in_columns
6704     echo
6705 fi
6706
6707 echo "License: $license"
6708
6709 echo "Creating configuration files ..."
6710
6711 fi # test "$quiet" != "yes"
6712
6713 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6714
6715 enabled stripping || strip="echo skipping strip"
6716
6717 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6718
6719 cat > ffbuild/config.mak <<EOF
6720 # Automatically generated by configure - do not modify!
6721 ifndef FFMPEG_CONFIG_MAK
6722 FFMPEG_CONFIG_MAK=1
6723 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6724 prefix=$prefix
6725 LIBDIR=\$(DESTDIR)$libdir
6726 SHLIBDIR=\$(DESTDIR)$shlibdir
6727 INCDIR=\$(DESTDIR)$incdir
6728 BINDIR=\$(DESTDIR)$bindir
6729 DATADIR=\$(DESTDIR)$datadir
6730 DOCDIR=\$(DESTDIR)$docdir
6731 MANDIR=\$(DESTDIR)$mandir
6732 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6733 INSTALL_NAME_DIR=$install_name_dir
6734 SRC_PATH=$source_path
6735 SRC_LINK=$source_link
6736 ifndef MAIN_MAKEFILE
6737 SRC_PATH:=\$(SRC_PATH:.%=..%)
6738 endif
6739 CC_IDENT=$cc_ident
6740 ARCH=$arch
6741 INTRINSICS=$intrinsics
6742 CC=$cc
6743 CXX=$cxx
6744 AS=$as
6745 OBJCC=$objcc
6746 LD=$ld
6747 DEPCC=$dep_cc
6748 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6749 DEPAS=$as
6750 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6751 X86ASM=$x86asmexe
6752 DEPX86ASM=$x86asmexe
6753 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6754 AR=$ar
6755 ARFLAGS=$arflags
6756 AR_O=$ar_o
6757 RANLIB=$ranlib
6758 STRIP=$strip
6759 NVCC=$nvcc
6760 CP=cp -p
6761 LN_S=$ln_s
6762 CPPFLAGS=$CPPFLAGS
6763 CFLAGS=$CFLAGS
6764 CXXFLAGS=$CXXFLAGS
6765 OBJCFLAGS=$OBJCFLAGS
6766 ASFLAGS=$ASFLAGS
6767 NVCCFLAGS=$nvccflags
6768 AS_C=$AS_C
6769 AS_O=$AS_O
6770 OBJCC_C=$OBJCC_C
6771 OBJCC_E=$OBJCC_E
6772 OBJCC_O=$OBJCC_O
6773 CC_C=$CC_C
6774 CC_E=$CC_E
6775 CC_O=$CC_O
6776 CXX_C=$CXX_C
6777 CXX_O=$CXX_O
6778 NVCC_C=$NVCC_C
6779 NVCC_O=$NVCC_O
6780 LD_O=$LD_O
6781 X86ASM_O=$X86ASM_O
6782 LD_LIB=$LD_LIB
6783 LD_PATH=$LD_PATH
6784 DLLTOOL=$dlltool
6785 WINDRES=$windres
6786 DEPWINDRES=$dep_cc
6787 DOXYGEN=$doxygen
6788 LDFLAGS=$LDFLAGS
6789 LDEXEFLAGS=$LDEXEFLAGS
6790 LDLIBFLAGS=$LDLIBFLAGS
6791 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6792 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6793 X86ASMFLAGS=$X86ASMFLAGS
6794 BUILDSUF=$build_suffix
6795 PROGSSUF=$progs_suffix
6796 FULLNAME=$FULLNAME
6797 LIBPREF=$LIBPREF
6798 LIBSUF=$LIBSUF
6799 LIBNAME=$LIBNAME
6800 SLIBPREF=$SLIBPREF
6801 SLIBSUF=$SLIBSUF
6802 EXESUF=$EXESUF
6803 EXTRA_VERSION=$extra_version
6804 CCDEP=$CCDEP
6805 CXXDEP=$CXXDEP
6806 CCDEP_FLAGS=$CCDEP_FLAGS
6807 ASDEP=$ASDEP
6808 ASDEP_FLAGS=$ASDEP_FLAGS
6809 X86ASMDEP=$X86ASMDEP
6810 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6811 CC_DEPFLAGS=$CC_DEPFLAGS
6812 AS_DEPFLAGS=$AS_DEPFLAGS
6813 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6814 HOSTCC=$host_cc
6815 HOSTLD=$host_ld
6816 HOSTCFLAGS=$host_cflags
6817 HOSTCPPFLAGS=$host_cppflags
6818 HOSTEXESUF=$HOSTEXESUF
6819 HOSTLDFLAGS=$host_ldflags
6820 HOSTEXTRALIBS=$host_extralibs
6821 DEPHOSTCC=$host_cc
6822 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6823 HOSTCCDEP=$HOSTCCDEP
6824 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6825 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6826 HOSTCC_C=$HOSTCC_C
6827 HOSTCC_O=$HOSTCC_O
6828 HOSTLD_O=$HOSTLD_O
6829 TARGET_EXEC=$target_exec $target_exec_args
6830 TARGET_PATH=$target_path
6831 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6832 CFLAGS-ffplay=${sdl2_cflags}
6833 CFLAGS_HEADERS=$CFLAGS_HEADERS
6834 ZLIB=$($ldflags_filter -lz)
6835 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6836 EXTRALIBS=$extralibs
6837 COMPAT_OBJS=$compat_objs
6838 INSTALL=$install
6839 LIBTARGET=${LIBTARGET}
6840 SLIBNAME=${SLIBNAME}
6841 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6842 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6843 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6844 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6845 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6846 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6847 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6848 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6849 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6850 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6851 NOREDZONE_FLAGS=$noredzone_flags
6852 LIBFUZZER_PATH=$libfuzzer_path
6853 IGNORE_TESTS=$ignore_tests
6854 EOF
6855
6856 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6857
6858 print_program_extralibs(){
6859     eval "program_extralibs=\$${1}_extralibs"
6860     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6861 }
6862
6863 map 'print_program_extralibs $v' $PROGRAM_LIST
6864
6865 cat > $TMPH <<EOF
6866 /* Automatically generated by configure - do not modify! */
6867 #ifndef FFMPEG_CONFIG_H
6868 #define FFMPEG_CONFIG_H
6869 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6870 #define FFMPEG_LICENSE "$(c_escape $license)"
6871 #define CONFIG_THIS_YEAR 2017
6872 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6873 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6874 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6875 #define av_restrict $_restrict
6876 #define EXTERN_PREFIX "${extern_prefix}"
6877 #define EXTERN_ASM ${extern_prefix}
6878 #define BUILDSUF "$build_suffix"
6879 #define SLIBSUF "$SLIBSUF"
6880 #define HAVE_MMX2 HAVE_MMXEXT
6881 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6882 EOF
6883
6884 test -n "$assert_level" &&
6885     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6886
6887 test -n "$malloc_prefix" &&
6888     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6889
6890 if enabled x86asm; then
6891     append config_files $TMPASM
6892     printf '' >$TMPASM
6893 fi
6894
6895 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6896
6897
6898 mkdir -p doc
6899 mkdir -p tests
6900 mkdir -p tests/api
6901 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6902
6903 print_config ARCH_   "$config_files" $ARCH_LIST
6904 print_config HAVE_   "$config_files" $HAVE_LIST
6905 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6906                                      $CONFIG_EXTRA      \
6907                                      $ALL_COMPONENTS    \
6908
6909 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6910 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6911
6912 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6913 cp_if_changed $TMPH config.h
6914 touch ffbuild/.config
6915
6916 enabled x86asm && cp_if_changed $TMPASM config.asm
6917
6918 cat > $TMPH <<EOF
6919 /* Generated by ffconf */
6920 #ifndef AVUTIL_AVCONFIG_H
6921 #define AVUTIL_AVCONFIG_H
6922 EOF
6923
6924 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6925
6926 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6927
6928 cp_if_changed $TMPH libavutil/avconfig.h
6929
6930 # generate the lists of enabled components
6931 print_enabled_components(){
6932     file=$1
6933     struct_name=$2
6934     name=$3
6935     shift 3
6936     echo "static const $struct_name *$name[] = {" > $TMPH
6937     for c in $*; do
6938         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6939     done
6940     echo "    NULL };" >> $TMPH
6941     cp_if_changed $TMPH $file
6942 }
6943
6944 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6945 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6946
6947 if test -n "$WARNINGS"; then
6948     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6949     enabled fatal_warnings && exit 1
6950 fi
6951
6952 # Settings for pkg-config files
6953
6954 cat > ffbuild/config.sh <<EOF
6955 # Automatically generated by configure - do not modify!
6956 shared=$shared
6957 build_suffix=$build_suffix
6958 prefix=$prefix
6959 libdir=$libdir
6960 incdir=$incdir
6961 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6962 source_path=${source_path}
6963 LIBPREF=${LIBPREF}
6964 LIBSUF=${LIBSUF}
6965
6966 extralibs_avutil="$LIBRT $LIBM"
6967 extralibs_avcodec="$extralibs"
6968 extralibs_avformat="$extralibs"
6969 extralibs_avdevice="$extralibs"
6970 extralibs_avfilter="$extralibs"
6971 extralibs_avresample="$LIBM"
6972 extralibs_postproc=""
6973 extralibs_swscale="$LIBM"
6974 extralibs_swresample="$LIBM $LIBSOXR"
6975 EOF
6976
6977 for lib in $LIBRARY_LIST; do
6978     lib_deps="$(eval echo \$${lib}_deps)"
6979     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6980 done